BUFFALO Blu-ray drive, model BRXL-PT6U3-BKD, supports 4K video playback and M-DISC. Body only. It was used with the protective vinyl still attached, but I removed it to check for scratches before listing. There are a few small scratches. Please check the images. - Brand: BUFFALO - Model: BRXL-PT6U3-BKD - Function: Supports 4K video playback - Supported OS: Windows, Mac - M-DISC Support: Yes - Accessories: Type-C conversion cable - LED indicator: Notifies of insufficient power with an LED Please check the Buffalo website for detailed specifications. It was working normally until around October of last year. I haven't been able to confirm its current operation because my computer broke, but when I connected the USB, it turned on and the green light came on. It also read DVDs. Since I haven't confirmed its current operation, please consider it as junk.