chore: Added new blog article "My T420 successor"

content/blog/the-search-is-over-swapping-out-my-broken-t420-for-a-ready-to-rock-thinkpad-p50/index.id.md

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+---
+title: "Pencarian Telah Berakhir: Mengganti T420 Saya yang Rusak dengan ThinkPad P50 yang Siap Diguncang"
+description: Saya akhirnya mendapatkan pengganti untuk laptop ThinkPad T420 saya yang telah rusak, dan ini merupakan peningkatan yang signifikan.
+summary: Saya akhirnya mendapatkan pengganti untuk laptop ThinkPad T420 saya yang telah rusak, dan ini merupakan peningkatan yang signifikan.
+keywords:
+    - Lenovo
+    - ThinkPad
+    - ThinkPad P50
+    - ThinkPad T420
+date: 2024-08-29T21:22:51+07:00
+lastmod:
+draft: false
+noindex: false
+featured: false
+pinned: false
+tags:
+    - Lenovo
+    - ThinkPad
+authors:
+    - ditatompel
+---
+
+Sudah bertahun-tahun saya menggunakan **Lenovo ThinkPad T420** sebagai laptop
+keseharian saya. Sudah banyak aplikasi yang lahir dari laptop saya ini. Tidak
+sedikit juga server yang saya maintenance melalui [ThinkPad T420 saya][my_t420]
+ini.
+
+Sedikit bercerita, CPU ThinkPad T420 saya ini sudah saya upgrade secara mandiri
+yang awalnya menggunakan Intel Core [i5-2520M][i52520m] ke Intel Core
+[i7-2620M][i72620m]. _Head sink_ juga sudah saya ganti dengan yang lebih baik
+untuk meminimasir terjadinya CPU _throttling_.
+
+Untuk memori, saya membekalinya dengan dua keping 8GB RAM DDR3, jadi dia
+memiliki total 16GB RAM. Sedangkan untuk _storage_ terpasang 500GB
+[Samsung SATA SSD 850 EVO][850evo]; 512GB SSD mSATA; dan 1TB harddisk SATA HGST
+7200RPM. Luar biasa! Saya sangat menyukainya!
+
+## T420 Mulai Menunjukan Umurnya
+
+![Screen Crying T420][my_t420_monitor]
+
+Tapi, sekitar bulan Maret 2024 lalu, T420 saya ini mulai _"rewel"_. warna Layar
+LCD menjadi tidak jelas dan sangat tidak responsif, beberapa tombol keyboard
+sudah tidak berfungsi, dan yang paling parah: dia sudah tidak bisa menjaga
+temperatur dan seringkali _overheat_. Bahkan untuk _streaming_ video YouTube
+dengan kualitas 480p selama lebih dari 5 menit saja tidak mampu.
+
+Saya tahu, masalah temperatur mungkin bisa diatasi dengan membersihkan kipas
+dan memberikan _thermal paste_ yang baik; tapi saya rasa jumlah dana yang harus
+dikeluarkan untuk untuk memperbaiki permasalahan-permasalahan diatas akan
+mendekati harga satu unit bekas untuk seri yang sama (atau bahkan lebih).
+
+Jadi jalan terbaik adalah membeli sebuah unit lain dengan model yang "muda"
+untuk menggantikan ThinkPad T420 yang saat artikel ini ditulis sudah berusia
+lebih dari 12 tahun.
+
+## Pilihan Pengganti
+
+Saya tidak perlu laptop _"slim"_, ringan, atau desain yang menawan. Tapi,
+selalu ada kriteria yang wajib dipenuhi untuk laptop yang saya gunakan
+sehari-hari, yaitu:
+
+1. Harga tidak lebih dari 6.000.000 rupiah.
+2. CPU arsitekturnya harus `x86_64` dan support virtualiasi.
+3. Memiliki port Ethernet (`RJ-45`).
+4. Keyboard harus nyaman dan memberikan sensasi mengetik yang menyenangkan.
+5. Mudah dibongkar dan dikonfigurasi serta memiliki banyak input maupun output.
+   Misalnya: USB port, jumlah _internal storage_ yang disediakan, dll.
+6. Memiliki trackpoint.
+
+Maka jelas, tidak ada pilihan lain selain laptop ThinkPad bekas. Pertanyaannya,
+ThinkPad apa yang cocok untuk saya saat ini? Saya suka dengan seri **"T"**,
+tetapi juga sangat tertarik dengan seri **"P"**. Dari kedua seri tersebut, ada
+beberapa pilihan yang saya kira cocok untuk saya, yaitu:
+
+-   ThinkPad T480
+-   ThinkPad T580
+-   ThinkPad P51
+
+| Model    | T480                | T580                | P51                 |
+| -------- | ------------------- | ------------------- | ------------------- |
+| Layar    | 14"                 | 15,6"               | 15,6"               |
+| Prosesor | i5-8250U (8th Gen)  | i7-8650U (8th Gen)  | i7-7820HQ (7th Gen) |
+| GPU      | -                   | -                   | NVIDIA Quadro M1200 |
+| Memori   | 2 banks, up to 32GB | 2 banks, up to 32GB | 4 banks, up to 64GB |
+| Disk     | up to 2 drives      | up to 2 drives      | up to 3 drives      |
+| Harga    | ~3.600.000          | ~5.000.000          | ~6.200.000          |
+
+Dari perbandingan sederhana table diatas:
+
+-   Harga rata-rata yang saya ambil untuk seri "T" adalah konfigurasi 8GB RAM dan 256 GB SSD.
+-   Harga rata-rata yang saya ambil untuk seri "P" adalah konfigurasi 16GB RAM dan 512 GB SSD.
+
+### ThinkPad T480/T580
+
+Bagi saya, perbedaan paling utama dari T480 dan T580 dari segi spesifikasi
+_hardware_ ada pada layar dan prosesor. ThinkPad T480 memiliki layar 14 inch,
+sedangkan T580 memiliki layar 15,6 inch.
+
+Baik seri T480 ataupun T580 ada tipe yang menggunakan GPU
+**NVIDIA Gforce MX150**, tapi untuk jenis tersebut harganya jauh lebih mahal
+dan sulit didapat. Keduanya juga memiliki input dan output yang hampir sama,
+yaitu:
+
+-   4-in-1 reader (MMC, SD, SDHC, SDXC).
+-   2 port USB 3.1 Gen 1.
+-   1 port USB 3.1 Type-C Gen 1 (untuk power input dan DisplayPort).
+-   1 port USB 3.1 Type-C Gen 2 / Thunderbolt 3.
+-   1 port HDMI 1.4b.
+-   1 port Ethernet (RJ-45).
+-   Headphone/microphone combo jack.
+
+Konfigurasi _storage drive_ utama juga bervariasi, kebanyakan penjual tidak
+menyebutkan secara detail apakah drive utama yang terpasang adalah SATA atau
+NVMe M.2.
+
+### ThinkPad P51
+
+Seri **"P"** atau penerus seri **"W"** adalah seri ThinkPad yang saya inginkan
+dari dulu. Memang jika dilihat generasi CPU-nya, ThinkPad P51 menggunakan satu
+generasi lebih tua (Intel Core Gen 7) jika dibandingkan dengan
+ThinkPad T480/T580 (Intel Core Gen 8). Tapi jangan terkecoh dari generasinya
+saja; ThinkPad P51 ini menggunakan suffix **"H"** yang artinya
+**performa tinggi**. Sedangkan suffix **"U"** pada seri T480/T580 artinya
+**power efisien** sehingga saya yakin dari sisi performa, i7-7820**HQ** lebih
+baik daripada i7-8650**U**.
+
+P51 juga sudah dibekali dengan GPU **NVIDIA Quadro M1200** (beberapa ada yang
+dengan seri **M2000** dengan harga yang lebih tinggi). Untuk input dan output,
+bagi saya P51 jauh lebih mempesona dimana dia menawarkan:
+
+-   4-in-1 reader (MMC, SD, SDHC, SDXC), supports UHS-II SD card.
+-   4 port USB 3.1 Gen 1 (USB 3.0, 1 Always On).
+-   1 port USB 3.1 Type-C / Thunderbolt 3.
+-   1 Mini DisplayPort 1.2a.
+-   1 port HDMI 1.4b.
+-   1 port Ethernet (RJ-45).
+-   1 slot ExpressCard/34.
+
+Dan konfigurasi _storage drive_ utama memiliki **2 slot M.2 PCIe NVMe** dengan
+**kapasitas masing-masing slot up to 2TB**. Kemudian ditambah
+**1 slot SATA 6.0Gb/s** dengan **kapasitas up to 4TB**. Dengan kata lain, jika
+dimaksimalkan dari sisi internal storagenya saja, mesin ini mampu membaca
+**hingga 8TB**.
+
+Dari pilihan-pilihan diatas, saya sebenarnya lebih condong ke ThinkPad P51,
+meskipun harganya sedikit melebihi budget. Dan untuk seri "P", saya yakin pada
+akhirnya saya akan mengeluarkan jauh lebih banyak dana untuk memaksimalkan
+kemampuuan laptop tersebut.
+
+## Akhirnya, Tawaran Yang Menarik: ThinkPad P50
+
+Di pertengahan bulan Agustus lalu, saya mencoba mencari laptop bekas
+ThinkPad P51 di beberapa marketplace lokal. Sangat sulit menemukan harga yang
+sesuai dengan budget saya. Sampai pada akhirnya muncul sebuah produk
+ThinkPad P50 dengan harga 4.700.000 rupiah! Tanpa menunggu lama, saya
+menanyakan apakah produk tersebut masih tersedia dan spesifikasi detail laptop
+tersebut.
+
+Setelah spek laptop terkonfirmasi, saya kemudian mendapatkan promo diskon
+sebesar 300.000 dari marketplace tersebut! Dua hari kemudian, barang pesanan
+yang saya tunggu-tunggu akhirnya tiba.
+
+Berikut ini adalah spefisikasi laptop ThinkPad P50 saat saya terima:
+
+-   Merk: Lenovo
+-   Model: ThinkPad P50 (**20EQS44000**)
+-   Prosesor: Intel(R) Core(TM) [i7-6820HQ][i76820hq] CPU @ 2.70GHz
+-   GPU: **NVIDIA Quadro M1000M 4GB**
+-   Network:
+    -   Ethernet: 1GbE **I219-LM**
+    -   Wireless: Intel(R) Dual Band Wireless-AC 8260
+-   Keyboard: SN20H35185 (UK/EU Layout, no backlight)
+-   Batrai: Lenovo 00NY491 (4 cells, 66000mWh, 15V)
+-   Memori RAM: 8GB/64GB
+    -   ChannelA-DIMM0: 8GB SODIMM DDR4 2133 MT/s Samsung M471A1K43CB1-CRC
+    -   ChannelA-DIMM1: Kosong
+    -   ChannelB-DIMM0: Kosong
+    -   ChannelB-DIMM1: Kosong
+-   Penyimpanan:
+    -   NVMe0: Samsung 256GB
+    -   NVMe1: Kosong
+    -   SATA: Kosong
+
+Untuk charger laptop, saya mendapatkan model Lenovo **ADL170NLC3A 170W** dengan
+input 100-240V dan output 20V-8.5A. Saya juga mendapatkan bonus tas laptop yang
+sepertinya tidak muat untuk ukuran laptop 15,6 inch ini. =)
+
+### Kekurangan
+
+Saya akan memulai dengan kekurangan dari kondisi laptop yang saya terima
+terlebih dulu.
+
+Layout keyboard bawaan laptop ini menggunakan layout UK/EU tanpa backlight.
+Dan kebetulan yang saya terima bermasalah pada trackpointnya. Dia seperti terus
+menekan tombol _"middle-button"_ sehingga trackpoint tidak berfungsi
+sebagaimana mestinya.
+
+Saya sudah komplain kepada penjual dan mereka menanggapi dengan sangat baik
+serta mau memberikan potongan sebesar 300.000 rupiah untuk permasalahan ini.
+Saya sangat menghargai dan mengapresiasi niat baik penjual.
+
+Karena trackpoint merupakan bagian penting dari cara saya menggunakan laptop,
+saya mencari keyboard pengganti dengan layout US, dan saya mendapatkan versi
+layout US dengan backlight dengan harga 600.000 rupiah. Jadi boleh dibilang,
+kekurangan soal trackpoint diatas boleh dihilangkan alias impas (bahkan bisa
+dibilang untung jika dihitung dengan diskon dari marketplace dan pengembalian
+dana dari penjual).
+
+![UK/EU Keyboard Layout][p50_uk_keyboard]
+
+### Kelebihan
+
+Dari kekurangan diatas yang sudah saya "anulir", ada segudang hal baik yang
+saya dapatkan:
+
+-   kondisi fisik laptop yang saya terima sangat baik. Memang ada sedikit baret
+    tipis pada permukaan laptop, tapi saya rasa hal itu sangat wajar jika
+    melihat usia laptop.
+-   "Unit test" dari Lenovo's UEFI diagnostic semuanya "PASS" yang artinya baik.
+-   Layar LCD juga masih sangat baik, sampai saat ini tidak terlihat adanya
+    _white spot_ pada layar.
+-   Kipas dan _thermal_ saya rasa masih dalam kondisi optimal.
+-   Dari informasi `nvme` maupun S.M.A.R.T di Linux, kondisi NVMe adalah baru
+    (meskipun sebenarnya tidak masalah bagi saya karena saya berencana menggantinya).
+-   Seluruh port USB 3.0, charger, 4-in-1 card reader (MMC, SD, SDHC, SDXC),
+    headphone/microphone combo jack bekerja dengan normal.
+-   Daya tahan baterai dalam kondisi sempurna.
+
+Diluar kelebihan dan kekurangan diatas, ada beberapa fitur / _hardware_ yang
+belum bisa saya coba atau saya tidak berniat untuk mencoba:
+
+-   Mini DisplayPort, HDMI, USB Type-C / Thunderbolt 3, dan ExpressCard slot
+    belum sempat saya coba karena saya tidak memiliki media untuk mencobanya.
+-   Wireless WAN M.2 card Micro-SIM belum sempat saya coba.
+-   Saya tidak berminat mencoba Fingerprint Reader dan
+    **Pantone color calibrator** karena saya tidak menggunakannya.
+
+## Kesimpulan
+
+_Overall_, saya puas dengan kondisi produk yang saya dapatkan. Serius, saya
+terkejut dan salut dengan daya tahan baterai untuk pemakaian normal yang mampu
+**bertahan hingga 7 jam dengan mode "hybrid"** dan
+**3 - 4 jam pemakaian dengan mode grafis**.
+
+Untuk _disk storage_, saya pasti akan melakukan upgrade. Saat ini saya lebih
+memprioritaskan upgrade NVMe storage ke kapasitas yang lebih besar.
+
+Sedangkan untuk RAM, saat ini saya masih merasa cukup dengan 8GB. Namun
+kedepannya saya pasti akan memaksimalkan RAM pada ThinkPad P50 saya ini!
+
+Informasi hardware dan konfigurasi sistem (Linux) ThinkPad P50 ini bisa dilihat
+di [repositori GitHub][my_p50] saya.
+
+Sedangkan untuk nasib ThinkPad T420, kedepannya saya berencana menjadikannya
+sebagai sebuah mini server dan _testing machine_.
+
+[my_t420]: https://github.com/ditatompel/ditatompel/tree/main/machines/t420 "My ThinkPad T420 GitHub Repo"
+[my_t420_monitor]: screen-cryin-t420.jpg#center "Internal monitor T420 saya: tidak jelas dan sangat tidak responsif"
+[my_p50]: https://github.com/ditatompel/ditatompel/tree/main/machines/p50 "My ThinkPad P50 GitHub Repo"
+[p50_uk_keyboard]: uk-eu-p50-keyboard-layout.jpg#center "UK/EU keyboard layout"
+[i52520m]: https://www.intel.com/content/www/us/en/products/sku/52229/intel-core-i52520m-processor-3m-cache-up-to-3-20-ghz/specifications.html "Intel(R) Core(TM) i5-2520M specifications"
+[i72620m]: https://www.intel.com/content/www/us/en/products/sku/52231/intel-core-i72620m-processor-4m-cache-up-to-3-40-ghz/specifications.html "Intel(R) Core(TM) i7-2620M specifications"
+[i76820hq]: https://www.intel.com/content/www/us/en/products/sku/88970/intel-core-i76820hq-processor-8m-cache-up-to-3-60-ghz/specifications.html "Intel(R) Core(TM) i7-6820HQ specifications"
+[850evo]: https://www.samsung.com/id/memory-storage/sata-ssd/850-evo-sata-3-ssd-500gb-mz-75e500bw/ "Samsung 850 EVO SATA III"

content/blog/the-search-is-over-swapping-out-my-broken-t420-for-a-ready-to-rock-thinkpad-p50/index.md

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+---
+title: "The Search is Over: Swapping Out My Broken T420 for a Ready to Rock ThinkPad P50"
+description: I finally got a replacement for my broken ThinkPad T420 laptop, and it's a significant improvement.
+summary: I finally got a replacement for my broken ThinkPad T420 laptop, and it's a significant improvement.
+keywords:
+    - Lenovo
+    - ThinkPad
+    - ThinkPad P50
+    - ThinkPad T420
+date: 2024-08-29T21:22:51+07:00
+lastmod:
+draft: false
+noindex: false
+featured: false
+pinned: false
+tags:
+    - Lenovo
+    - ThinkPad
+authors:
+    - ditatompel
+---
+
+I've been using a **Lenovo ThinkPad T420** as my daily laptop for years. Many
+applications have been born from this laptop, and I also maintain several
+servers through [my trusty ThinkPad T420][my_t420].
+
+To share a little story with you, I upgraded my ThinkPad T420's CPU
+independently - initially, it used an Intel Core [i5-2520M][i52520m] processor,
+which I later swapped out for an Intel Core [i7-2620M][i72620m]. Additionally,
+I replaced the heat sink with a better one to minimize CPU throttling.
+
+For memory, I outfitted it with two 8GB DDR3 RAM chips, giving it a total of
+16GB of RAM. As for storage, my ThinkPad T420 is equipped with a 500GB
+[Samsung SATA SSD 850 EVO][850evo], a 512GB mSATA SSD, and a 1TB SATA HGST
+hard drive (7200RPM). I must say, I'm quite pleased with the result!
+
+## The T420 Starts to Show Its Age
+
+![Screen Crying T420][my_t420_monitor]
+
+However, around March 2024, my T420 began to show its age. The LCD screen's
+color quality became unclear and unresponsive, some keyboard buttons
+stopped working altogether, and worst of all: it struggled to maintain a stable
+temperature, often overheating. Even streaming YouTube videos in 480p quality
+for more than 5 minutes was no longer possible.
+
+I realize that the temperature issue might be addressed by cleaning the fan
+and applying good thermal paste; however, I think the cost of fixing these
+problems would be comparable to purchasing a used unit from the same series
+(or even higher).
+
+So, it seems the best course of action is to purchase another model that's
+"younger" and more modern to replace my aging ThinkPad T420. At the time of
+writing this article, my trusty laptop is well over 12 years old.
+
+## Replacement Options
+
+I'm not concerned with a laptop's slim design, lightweight build, or
+aesthetic appeal. However, I do have some essential criteria for my
+daily laptop, which are:
+
+1. The price must be capped at $380.
+2. The CPU architecture must be `x86_64` and support virtualization capabilities.
+3. It must feature an Ethernet port (`RJ-45`) for reliable connectivity.
+4. The keyboard should provide a comfortable and pleasant typing experience.
+5. Easy disassembly and configuration are important, along with a variety of
+   inputs and outputs, such as USB ports, internal storage, and more.
+6. A trackpoint is also a must-have.
+
+It's clear that I'm leaning towards a used ThinkPad laptop. The question is,
+which model would be the best fit for me right now? I've always been fond
+of the "T" series, but I'm also intrigued by the "P" series.
+Among these options, the following models stand out to me:
+
+-   ThinkPad T480
+-   ThinkPad T580
+-   ThinkPad P51
+
+| Model     | T480                | T580                | P51                 |
+| --------- | ------------------- | ------------------- | ------------------- |
+| Screen    | 14"                 | 15.6"               | 15.6"               |
+| Processor | i5-8250U (8th Gen)  | i7-8650U (8th Gen)  | i7-7820HQ (7th Gen) |
+| GPU       | -                   | -                   | NVIDIA Quadro M1200 |
+| Memory    | 2 banks, up to 32GB | 2 banks, up to 32GB | 4 banks, up to 64GB |
+| Disk      | up to 2 drives      | up to 2 drives      | up to 3 drives      |
+| Price     | ~ $232              | ~ $323              | ~ $400              |
+
+From the quick comparison table above:
+
+-   The average price I took for the "T" series is the 8GB RAM and 256GB SSD configuration.
+-   The average price I took for the "P" series is the 16GB RAM and 512GB SSD configuration.
+
+### ThinkPad T480/T580
+
+In terms of hardware specifications, the primary differences between the T480
+and T580 for me are the screen size and processor. The ThinkPad T480 features
+a 14-inch display, whereas the T580 boasts a 15.6-inch screen.
+
+Both the T480 and T580 series offer variants that utilize the
+**NVIDIA GeForce MX150** GPU; however, these models are significantly more
+expensive and harder to find. Additionally, both series share similar
+input/output configurations, including:
+
+-   A 4-in-1 card reader supporting MMC, SD, SDHC, and SDXC formats.
+-   Two USB 3.1 Gen 1 ports.
+-   One USB 3.1 Type-C Gen 1 port, which serves as a power input and DisplayPort.
+-   One USB 3.1 Type-C Gen 2 / Thunderbolt 3 port.
+-   One HDMI 1.4b port.
+-   One Ethernet port (RJ-45).
+-   A headphone/microphone combo jack.
+
+The main storage drive configurations also vary, with most sellers not
+providing detailed information on whether the primary drive installed is SATA
+or NVMe M.2.
+
+### ThinkPad P51
+
+The ThinkPad P51 is the "P" series or the successor to the "W" series, which
+has always fascinated me. While it may seem that the CPU generation is one step
+behind compared to the ThinkPad T480/T580 (Intel Core Gen 8),
+don't underestimate the performance capabilities of the ThinkPad P51.
+The suffix **"H"** indicates **high-performance** processing, whereas the
+**"U"** suffix on the T480/T580 series signifies power **efficiency**.
+I am confident that the i7-7820**HQ** processor in the P51 outperforms the
+i7-8650**U** in the T480/T580.
+
+The P51 also features an **NVIDIA Quadro M1200** GPU (some models come with the
+**M2000** series at a higher price). In terms of input/output capabilities,
+I am impressed by the P51's offering:
+
+-   A 4-in-1 card reader supporting MMC, SD, SDHC, and SDXC formats,
+    with UHS-II SD card compatibility.
+-   Four USB 3.1 Gen 1 ports (one always-on).
+-   One USB 3.1 Type-C / Thunderbolt 3 port.
+-   One Mini DisplayPort 1.2a.
+-   One HDMI 1.4b port.
+-   One Ethernet port (RJ-45).
+-   One ExpressCard/34 slot.
+
+The P51's main storage drive configuration is particularly impressive,
+featuring **two M.2 PCIe NVMe** slots with a capacity of **up to 2TB each** and
+**one SATA 6.0Gb/s** slot with a capacity of **up to 4TB**. In other words,
+this machine has the potential to **store up to 8TB internally**.
+
+Of the options above, I find myself leaning more towards the ThinkPad P51,
+despite its slightly higher price point. Furthermore, for the "P" series,
+I am prepared to invest additional funds to maximize the laptop's capabilities.
+
+## Finally, a Good Deal: ThinkPad P50
+
+In mid-August, I tried to find a used ThinkPad P51 laptop in several online
+marketplaces. It was challenging to find a price that fit my budget until
+finally, I found a fancy ThinkPad P50 for about **$304**!
+Without hesitation, I inquired about the product's availability and
+specifications.
+
+Once the laptop specifications were confirmed, I received a discount promo
+of ~$20 from the marketplace! Two days later, the order that I had been waiting
+for finally arrived.
+
+The following are the specifications of the ThinkPad P50 laptop as they stood
+when I received it:
+
+-   Brand: Lenovo
+-   Model: ThinkPad P50 (**20EQS44000**)
+-   Processor: Intel(R) Core(TM) [i7-6820HQ][i76820hq] CPU @ 2.70GHz
+-   GPU: **NVIDIA Quadro M1000M 4GB**
+-   Network:
+    -   Ethernet: 1GbE **I219-LM**
+    -   Wireless: Intel(R) Dual Band Wireless-AC 8260
+-   Keyboard: **SN20H35185** (**UK/EU** Layout, no backlight)
+-   Battery: Lenovo **00NY491** (4 cells, 66000mWh, 15V)
+-   Memory : **8GB**/64GB
+    -   ChannelA-DIMM0: 8GB SODIMM DDR4 2133 MT/s Samsung M471A1K43CB1-CRC
+    -   ChannelA-DIMM1: None
+    -   ChannelB-DIMM0: None
+    -   ChannelB-DIMM1: None
+-   Storage:
+    -   NVMe0: Samsung 256GB
+    -   NVMe1: None
+    -   SATA: None
+
+As for the laptop charger, I received the Lenovo **ADL170NLC3A 170W** model
+with a 100-240V input and a 20V-8.5A output. Additionally, I got a bonus
+laptop bag that didn't seem to fit this 15.6-inch laptop.
+
+### The Bad
+
+I'll start by discussing the negative aspects of the laptop I received.
+
+The default keyboard layout on this laptop is set to UK/EU, without backlight.
+Additionally, the trackpoint was faulty, as if it had a sticky middle button
+that prevented proper functioning.
+
+I reported these issues to the seller and they responded promptly, offering a
+discount of ~$20 to compensate for the problem. I appreciated their willingness
+to resolve the issue.
+
+Since the trackpoint is crucial to my laptop usage, I sought a replacement
+keyboard with a US layout (with backlight), which I purchased for about $38.
+In essence, this issue has been mitigated, effectively breaking even
+(or even making a profit) when considering the discount from the marketplace
+and the refund from the seller.
+
+![UK/EU Keyboard Layout][p50_uk_keyboard]
+
+### The Goods
+
+Despite the initial issues, there were many positive aspects to the laptop:
+
+-   The physical condition of the laptop I received was excellent. While there
+    were some minor scratches on its surface, I believe this is reasonable
+    given the laptop's age.
+-   The Lenovo's UEFI diagnostic "unit test" all reported a "PASS" result,
+    indicating good starting point.
+-   The LCD screen remains in good condition, with no white spots visible to date.
+-   I'm satisfied that the fan and thermal systems are functioning optimally.
+-   According to `nvme` and S.M.A.R.T information in Linux, the NVMe condition
+    appears new (although this is of little consequence, as I plan to replace it).
+-   All USB 3.0 ports, charger, 4-in-1 card reader (MMC, SD, SDHC, SDXC), and
+    headphone/microphone combo jack were functioning normally.
+-   Battery life was in excellent condition.
+
+In addition to these goods and bad, there are some features/hardware that I
+have not been able to test or do not intend to use:
+
+-   I haven't had the opportunity to try the Mini DisplayPort, HDMI,
+    USB Type-C/Thunderbolt 3, or ExpressCard slot, as I lack the necessary media.
+-   The Wireless WAN M.2 card Micro-SIM is another feature I have yet to test.
+-   I'm not interested in testing the Fingerprint Reader and
+    **Pantone color calibrator**, as I do not utilize these features.
+
+## Conclusion
+
+Overall, I am satisfied with the condition of the product I received.
+To be honest, I was pleasantly surprised and impressed by the battery life for
+normal use, which can last up to **7 hours in "hybrid" mode** and
+**3-4 hours in graphics mode**.
+
+For disk storage, I plan to upgrade it. Currently, I prioritize upgrading
+NVMe storage to a larger capacity.
+
+As for RAM, while I currently feel sufficient with 8GB, I do intend to maximize
+the RAM on my ThinkPad P50 in the future!
+
+Hardware information and system configuration (Linux) of my ThinkPad P50 can be
+found on my [GitHub repository][my_p50].
+
+As for the fate of the ThinkPad T420, I plan to repurpose it as a mini server
+and testing machine in the future.
+
+[my_t420]: https://github.com/ditatompel/ditatompel/tree/main/machines/t420 "My ThinkPad T420 GitHub Repo"
+[my_t420_monitor]: screen-cryin-t420.jpg#center "My T420's internal monitor: unclear and unresponsive"
+[my_p50]: https://github.com/ditatompel/ditatompel/tree/main/machines/p50 "My ThinkPad P50 GitHub Repo"
+[p50_uk_keyboard]: uk-eu-p50-keyboard-layout.jpg#center "UK/EU keyboard layout"
+[i52520m]: https://www.intel.com/content/www/us/en/products/sku/52229/intel-core-i52520m-processor-3m-cache-up-to-3-20-ghz/specifications.html "Intel(R) Core(TM) i5-2520M specifications"
+[i72620m]: https://www.intel.com/content/www/us/en/products/sku/52231/intel-core-i72620m-processor-4m-cache-up-to-3-40-ghz/specifications.html "Intel(R) Core(TM) i7-2620M specifications"
+[i76820hq]: https://www.intel.com/content/www/us/en/products/sku/88970/intel-core-i76820hq-processor-8m-cache-up-to-3-60-ghz/specifications.html "Intel(R) Core(TM) i7-6820HQ specifications"
+[850evo]: https://www.samsung.com/id/memory-storage/sata-ssd/850-evo-sata-3-ssd-500gb-mz-75e500bw/ "Samsung 850 EVO SATA III"