Usage and Performance

The UGREEN 9-in-1 Steam Deck docking station functions well in day-to-day usage. The Gigabit Ethernet port's performance was excellent; we were able to regularly max out our 500 MB/s internet plan.

Regarding the 100 W USB-C power delivery port, it managed to supply enough current for the ROG Ally to use the 30 W Turbo power mode and slowly top up its battery while playing games. The Steam Deck also worked at its maximum 15 W TDP, while recharging its battery.


When we connected a UGREEN 100 W Uno charger to the docking station, we measured a maximum of 72 W of power used by the ROG Ally. That was more than enough to play games with the 30 W Turbo mode active and simultaneously charge the battery.

Interestingly, the ROG Ally couldn't work at 30 W when directly connected to the same charger, hinting that the ROG Ally has some kind of internal limitation when directly connected to third-party chargers.


The HDMI 2.0 port doesn't support VRR, which isn't a major downside since most handheld docks on the market don't have VRR support anyway. VRR support on handheld docks is all over the place anyway, with premium docks not offering VRR while some budget docks support it.


On the other hand, we were able to use our monitor at its native 3440x1440 resolution and max refresh rate of 100 Hz, with the port supporting up to 4K resolution at a 60 Hz refresh rate. We played Rush Rally 3 and a couple of Balatro runs on our Steam Deck and ROG Ally without issues.

While Steam Deck can exhibit aspect ratio issues in Game mode when docked (make sure to adjust the resolution manually while docked in Game mode, especially if you've got an ultrawide monitor), switching to Desktop mode functioned perfectly with the 3440x1440 resolution and 100 Hz refresh rate combo.

We also installed a Steam version of Rush Rally 3 on an external SSD and managed to load into the game and play it without any problems. The SD card slot also works great. We even managed to get much higher read and write performance compared to what UGREEN claims on the specs sheet, which is a nice bonus.


Regarding the number of ports, the situation's fine, but it could've been better. We'd like to see one more USB-A 2.0 port for connecting controllers that use a 2.4 GHz wireless dongle.

We'd also like to see a DisplayPort connector since the dock only comes with a single HDMI 2.0 port. That said, these aren't major negatives since not many handheld gaming PC owners will try running a triple-screen setup or a dual-screen setup with two external monitors.


Overall, this UGREEN dock has proven very reliable in day-to-day usage and offers everything your average PC handheld owner might need in a handheld dock. You've got just enough USB-A ports to connect a mouse, keyboard, and a 2.4 GHz controller. There's also a single USB-C 10 Gbit/s port for external SSDs.

That said, if you own an external SSD with USB-A connectivity and want to use it along with a 2.4 GHz controller, you'll have to spend extra on a USB-A to USB-C cable for the SSD or a USB-C to USB-A adapter for the 2.4 GHz dongle.

USB and SD Card Performance

We used a 500 GB Samsung 980 Pro NVMe SSD placed inside a Delock USB 3.2 Gen 2x2 external SSD enclosure to test the performance of the USB-C port.


To test the performance of the three USB-A ports, we used a 500 GB Samsung 850 Evo SATA SSD placed inside an Orico USB 3.0 2.5-inch external SSD/HDD enclosure.


We tested the SD and TF card slots with a 128 GB Samsung Pro Plus microSD card and a Samsung SD card adapter.

We used CrystalDiskMark with default settings to test the performance of the USB port and SD card slot.

USB-C 3.2 Gen 2 port (10 Gbit/s)

The USB-C 3.2 Gen 2 port showed performance a bit slower than what's possible via a USB 3.2 Gen 2 port, but the performance is close enough to the maximum theoretical bandwidth, and it didn't hurt the real-world performance of the external SSD.

USB-A 3.2 Gen 2 port (10 Gbit/s)

We managed to achieve pretty solid results over the USB-A 3.2 Gen 2 port, which is more than decent for a SATA-based external SSD connected via USB 3.0 protocol.

USB-A 2.0 port No. 1 (480 Mbit/s)

Again, solid results that maxed out the USB 2.0 data protocol.

USB-A 2.0 port No. 2 (480 Mbit/s)

The second USB-A 2.0 port also performed rather well.

SD Card Slot

The SD card slot performed much higher than UGREEN's 104 MB/s claims, with the max bandwidth going north of 160 MB/s. An excellent result.

TF (MicroSD) Card Slot

The TF slot managed to achieve a transfer rate higher than 160 MB/s as well.