Plugable 2.5G USB-C and USB to Ethernet Adapter – Dual-Connector 2-in-1 USB-C to RJ45 2.5Gbps LAN, Compatible with Thunderbolt 5 & 4, USB4, USB 3.0, Windows, Mac, ChromeOS, iPhone 15 & 16

I used this on a QNAP TS-453a NAS (plugged in via USB 3.0 port) and it was easily detected! It has a RealTek (RTK8156) chipset. Connectivity was stable at 2.5Gbps (no disconnects!). Build is plastic. It's slightly warm to the touch as expected but not hot. The only thing I disliked about it was the fact that it makes it a little hard to unplug the Ethernet cable (I used 3 different ones). Worth noting - It uses a USB C and a detachable USB A adapter for versatility I gave it 5 stars mainly because I was happy with the functionality and outcome of this mini project.

Bought a few of those over time as I upgraded my ISP connection speed to 2.5Gbps. Very conveniently comes with USB-A/C adapter and had no failures over the couple of years. The network connection is stable and as fast as advertised when measured with iperf3. Good deal for the money as well.

I own three of these adapters. They just work! I've used them to: - Add an ethernet port to my Windows 11 laptop - Add an extra ethernet port to connect my Proxmox server to a SPAN port - Add an extra ethernet port to a Jetson Orin Nano running Ubuntu for software testing The adapter's chipset is widely supported across operating systems and distributions. I've never had to install drivers. Plug it in, and the OS recognizes and configures the interface. Works great!

Full disclosure, I used this for a very specific use case. I recently upgraded my entire home network to 2.5 GBe and while all of my computers already had NICs that could handle that, my Synology DS920+ didn't. For the uninitiated, this NAS is actually a great little package that has most of the features of its bigger counterparts, with the exception of native 2.5 GBe support (neither on-device nor through expansion). This adapter was on the community sourced list of 2.5 GBe adapters that would work for the upgrade. I can confirm that it works. It takes a little bit of setup on the device, but once you enable it and install the driver, it works perfectly. I'm actually kinda glad since this probably ends up costing a fraction of what it would be if Synology offered a first party solution. This dongle is small enough to tuck away behind the NAS so that it's completely out of sight and I'm able to saturate it fully with around 200 MB/s transfer speeds, which is definitely an upgrade from the 90 MB/s that I'm used to seeing. I did briefly also test this on my M1 Macbook Pro (since the onboard wifi card is actually kinda terrible) and can confirm that I was able to get full throughput on that device as well.

This is a voluntary revised review because it sounded I was maligning the product. In performance tests with iperf3, an average speed of 2.34 Gbits/sec was attained point-to-point between two such devices. Note that you need the right device drivers activated. So the product basically works and gives you the possibility to speed up your network with plug-in adapters. In terms of practical, sustained speed, I get around 125-130 MB/s (about 1 Gbits/sec) for ssh/scp transfers. The real problem is copying large files over NFS-mounted directories. I will get that ~130 MB/s for 10-15 seconds, but then the rate drops drastically to < 1 MB/s. It could well be a NFS tuning issue. (I have yet to test SMB mounting.) The devices feel only slightly warm so overheating does not seem to be happening. I still stand by my earlier comment that in the future, I would look for true motherboard support and skip the plug-in adapters altogether.

Gemini recommended this adapter after some discussion, so I gave it a shot. I had a NAS that I wanted to be able to access faster from my local network, but all the ports on it are only 1 GB. I gave it a shot, and tested performance on it using iperf3 afterwards. I am going 2+ GB now. It works great.

First off, I tested this on OS X Mojave, Catalina, and Big Sur on 3 different machines and the results were the same for all three. You MUST install the latest drivers from the Realtek site to get 2.5Gbe speeds, otherwise it will only work as a normal Gigabit ethernet connection (and a sub-par one at that). I repeat, if you don't install the drivers, the built in OS X drivers work only as a gigabit ethernet plug. You can check if it's installed right by going to the Apple menu, select "About this Mac" and then click the "System report" button. In the window that then opens, on the left side click on "network". You should then see in the top right section "USB 10/100/1G/2.5G". Click on that and in the window below that's filled with lots of tech jargon there is a section called "Ethernet - Media Subtype". That section should say "2500Base-T". If it says 1000Base-T you didn't install the drivers correctly and you aren't getting 2.5Gbe speeds. So I unhooked my built in ethernet and tested only using this USB dongle. The dongle overheats within 15 seconds of transferring data at 2.5gbps speeds, then slows itself down to worse than gigabit speeds. This is using 5 foot Cat 6a cables, which should be far above the spec needed for 2.5gbe. Testing between a PC with a dedicated 2.5Gbe PCIe card, a single 62GB file took 10 minutes over the built in the built in gigabit connection of my MacPro, but took almost 20 minutes using the 2.5Gbe connection. (Both machines were using SSD's also) Looking at the traffic on my 2.5Gbe Qnap switch, I could see the transfer spike at the start up close to proper 2.5Gbe speeds, but then rapidly fall below normal gigabit as the adaptor overheated. This happened on another 2.5Gbe USB dongle (Also Realtek based) I purchased at the same time. Based on the reviews I knew overheating would be a problem, but I didn't think it would be this bad. The CableCreations plug is larger then the other one I bought so I hoped it would have better cooling, sadly it does not. I bought some small heatsinks off Amazon also. I'm going to tear the dongle down and see if applying a proper heatsink will help with transfer speeds. The moral of the story is while these do "work" they are just not that good. They are OK for quick bursts of data, but if you need 2.5Gbe, you probably are gigs and gigs around, and they are BAD at that because of the overheating. I'm going to break down and just buy a Thunderbolt 10Gbe adaptor I guess.

Das Teil ist sein Geld wert. Durch die Standard 10/100/1000 MBit Karte wurde meine Gigabit 1000er Leitung nur zur Hälfte beim Speed Test mit etwa 500 MBit ausgereizt. Nach dem Anbringen mit einem Cat 8 Kabel und dem 2,5er Adapter an den USB-C Port verdoppelte sich bei mir die Leistung auf fast 1000 MBit im Speed Test. Das hat sich also voll gelohnt für mich. Es ist nochmal merklich schneller geworden.Nur der Treiber war veraltet auf der Hersteller Seite. Es gibt einen Neuen besseren beim Chip Hersteller.....

It's working perfectly fine, I used it with my desktop pc and with tiny pc. I am using it for PFSENSE, Pfsense does detect it on tiny Lenovo pc M93Q, but you have to plug it on yellow usb port, otherwise it won't work, will keep disconnecting. Other option, if you are plugging it to tiny pc, is to install proxmox, this usb adaptor could be put in any USB port, proxmox will detect it and then use it in any VM\CT. Regards, M

il dispositivo non viene visto dai nap qnap e non è possibile installare dei drive unix con cui farlo rilevare. Testato su un ts251a. E' necessario prendere il prodotto QNAP QNA-UC5G1T che costa 3 volte di più ed ha un chipset differente. Tenete presente che per saturare la banda delle interfacce di serie (gigalan) dovete avere un nas che ha installato almeno due ssd sata in raid 0.

I picked up the Plugable 2.5G USB-C Ethernet adapter and it worked perfectly right out of the box with my Unraid server. No drivers, no tweaking, no headaches. I plugged it in and the interface showed up immediately and negotiated at 2.5 Gbps. Performance has been solid and stable so far. It’s a great way to add faster networking to systems that don’t have built-in 2.5 GbE, especially if you’re running Unraid or other Linux-based systems. Very happy with the purchase and would definitely recommend it if you need a simple and reliable 2.5 Gb adapter. 👍

macOSについて、です。 2020年5月に買っていますが、今（2021-10-29）の写真と外見が違います。もっと幅広の平べったいやつでした。（Amazonなので、このページに「去年あなたはこれを買いました」と表示されますので、商品は間違いありません） 実際メーカーサイトでもこの写真ですので途中で製品を切り替えたようですから、以下のレビューは当てはまるかどうかなんともいえません。 macOS Montereyが出たので、持ち合わせているいくつかの2.5GbE USB アダプターと5GbE USBアダプターを挿してみました。 macBook Pro 2017 TBが4つあってバーのあるやつ。 ただ挿すだけです。それでこの製品はOSのネットワーク設定にちゃんと2500GBase-T （＝2.5GbE）と認識されるようになりました。MTUは1500まででJumbo Frameには対応していませんでした。 switchには TP-Link の10GbE対応を使っていますがそちらの接続ランプも2.5GbE と出ます。 元々Monterey対応のインストーラーは有りませんので、ドライバー関係は何もインストールしていません。 これで2日ほど繋ぎっぱなしですが、問題なし。 （基本sleepしてしまいますがPower Napで定期的に起きてTime Machineなど、ちょっと動作を繰り返しています。またアップデート直後ということもあり、しばしばremote desktopで画面アクセスして、OSの設定をいじったり、新機能をみたりしました。） OSアップデート直後に結構なサイズのTime Machineのバックアップが発生しますので、その時間の間連続してファイルアクセスしていて落ちないので、大丈夫ではないか？他にも4GBほどのDVDのコピーしたファイルを10GbEのRAIDのNASに上げたり、落したりを数度繰り返しましたが、問題なし。 適当に選んだ1.67GBのファイルを10GbE接続のRAIDのNASにコピーしましたが、1.6Gb/s〜1.8Gb/s で、少し遅いですが。ちゃんとしたベンチマークではありませんので。けど実使用としてはこういう感じでしょうし。もっと大きなファイルをコピーすると途中で速度落ちます。macのハードとOSの側の問題もあるでしょうか。 ところでこの製品だけが（他に2社2.5GbE USBを試しました）Big Surで2Gb/sほどの速度で、しかも安定して動きました。 ネットワーク設定の表示は1000GBase-Tなのですが。スイッチの側では2.5GbEで接続していると認識されていました。 ドライバーのインストールはせず（そもそも既存のinstallerはBig Sur非対応ですし、無理に入れようにもBig Surに跳ねられたと思いました）。 先程同様1GB強のファイルで2Gb/s越えだったと思いました。ずっとBig Sur時代にはこれを使っていましたが、少なくとも通信が止まるとかkernel panicとかはゼロです。 他某2.5GbE USBアダプターもMontereyで2500GBase-Tと表示され、Jumbo Frameは非対応。さほど長く使っていませんがこの他社製品も多分問題ないでしょう。 他方5GbEのUSBアダプター、2社は5GbEと認識されず。速度も1ギガビットクラスの模様（真剣に測らず）。1社は100Base-T（百ベース・ティー）と認識されてしまい、しかもちょっと使っていたらネットが切れて、10分ぐらい復活せず。 なので5GbE USBアダプターはMontereyでは使えないと思います。Big Surでも使えませんでした（Big Sur 対応のinstallerもありませんでした） ということで: 本製品は、Monterey（とBig Sur）でmacがおかしくなるとか、ギガビット・イーサーより速度が出ないとかいうことはないと思いますので、多少体を張ってみる気がある人にはお勧めします。 私のハードが古い（macBook Pro 2017）ので、最近のmacをお持ちならもっと2.5Gb/sに迫る値も出るかもしれません。なので損はしないと思います。 （蛇足ですがBuffaloの2.5GbE+10GbEのスイッチに本製品を繋ぐと、猛烈にmacが落ちます。これは他社の2.5GbE USBアダプターでも同じ。Buffalo製2.5GbE USBアダプター含む。 このスイッチ、1ギガビットのイーサーを繋ぐ限り一切トラブりません。 2.5GbEを繋ぐと、それこそ30分とかに1回macが落ちます（ドライバーがあったCatalina時代。そして本製品は隠れ対応のBig Sur時代も）。ちなみに、私の合計3台のmacで経験しているます（古いimac 2015、それがこれが古いからかと疑い買い替えた最新のmacBook Air M1、それと上述macBook Pro 2017 touchbar） そして、TP-Linkからでた10GbEのスイッチに繋ぎ変えただけで落ちなくなりました。ちなみにBuffaloは、未だにテレビ、HDDレコーダーのギガビットイーサーを受けて、10GbE部分でこのTP-Linkとつながっていますが、その状態では一切悪さしをしません、多分。）