TBH, functionally there is absolutely NOTHING wrong with this DVD writer. It functions as a DVD Reader should. I cannot comment on its ability as a DVD Writer because I never ended up burning any DVDs.
Pro: Unlike the majority of USB Peripherals I have used and or purchased, it has a 4-Port USB 3.0 splitter.
Con: Unfortunately it requires more power to enable the 4 additional ports. I unplugged my external 5 TB HD, connected the DVD RW device, then connected the ext HD to one of the ports. I could not access the HD - it displayed in Windows Explorer, but could not access the files. When I tried to play a DVD (New, undamaged), it would not play until I disconnected the HD. Once I did that, the DVD played fine.
It is likely quite possible that the power cord (Split: 1 USB 3.0 Type-A Male 1 USB-C Male) must both be connected to enable the 4 onboard 3.0 Female connections to function.
Pro: The Speed and DVD Playback were more that sufficient to my needs. It was also very easy to connect and start playing DVDs.
Con: This beast is noisy while reading DVDs. VERY noisy. if I had it sitting on a up to date desktop, I likely would not be bothered. Unfortunately I had to increase the volume to compensate for the noise.
Con: The manual, if you could call it that, was English - sloppy English. I can overlook that, but the English portion of the manual consists of TWO bullet points:
1. You can't connect the device to your smart phone, car, TV, or use Blu-Ray discs.
2. You need to have a DVD Reader and possibly DVD Writer software installed. Respect to the manufacturer for recommending VLC Media Player.
That's pretty much what the manual consists of, sadly.
No mention of how to get the 4 USB 3.0 ports to function. I would have plugged in both the USB 3.0 Type-A and USB-C connectors, but my new laptop does not provide adjacent connectors on the same side.
As a DVD Reader, it works great. As a DVD Writer, I'm ASSUMING it works just fine. I purchased this unit mainly due to the cost (~ $30 USD) and the 4 Port USB 3.0 splitter - which I could not get to function. It's slim, light, and with a mostly intuitive setup. Unfortunately it's too noisy for my tastes.