PreSonus / Audio Interface / FireStudio Mobile 2-channel microphone preamplifier / audio interface As you can see, it's FW400. I have confirmed operation with FW400 → FW800 → Thunderbolt 2. Digital input/output (tested) is also possible with a 9-pin adapter. I am the original owner. The accessories at the time of purchase are as shown in the photos. I haven't checked everything, so I'm selling it as junk. Please research the operating system and compatible PC thoroughly before considering purchasing. I cannot provide support. I cannot accept questions after purchase, so please ask questions beforehand. There is no box, so it will be packed with bubble wrap and cardboard for shipping. Please refrain from purchasing if you are looking for a beautiful item with no noise or crackling. ★ Sold as-is. ★ If there are any scratches etc. not shown in the images, the current condition takes precedence. ★ Please make your purchase decision based on image judgment, pre-purchase questions, and "sufficient consideration and agreement with the condition and terms." ★ Please be sure to ask any questions beforehand. ★ It would be helpful if you could allow 5 days for shipping. ★ I will refrain from transactions with those who do not understand Japanese.