Hello, I am a hobbyist who has run into some speedbumps transitioning from an outdated home-assembled desktop DAW to a laptop. I'm hoping some experts can point me in the right direction. I originally had planned to modernize and rebuild my home-assembled desktop DAW, but I decided to give it a go on a T440S thinkpad (Win 8.1). The latency is acceptable for my ears and for my hobbyist needs, so I'm excited to just get up and running with the laptop instead of going through the desktop rebuild. Anyway, here are a few questions for any kind enough to help: 1. My main controller for actual keyboard playing is a M-Audio Keystation Pro 88. I read that it was class-compliant (no drivers needed), so I figured I was in good shape. To my surprise, my computer recognized an attached USB device but couldn't identify the hardware. Surfing the M-Audio forums, there seems to be a lot of grief for not having drivers or updates that fixes this problem with a lot of different devices. Is there a known solution for non-functional allegedly class-compliant M-Audio controllers? If not, my audio device (Komplete Audio 6) and the Keystation have the actual MIDI cable ports, so I think I can order MIDI cables and a power supply for the Keystation to avoid the USB problem. 2. My soft-synth controller for playing while tweaking the laptop is definitely obsolete - an old M-Audio Oxygen controller that is not class-compliant and with no Win 8 drivers. I'm going to buy a cheap 49 key replacement, but the Windows 8.1 class-compliant issue with my Keystation has me trigger shy. Are there any brands besides M-Audio to avoid for this controller purchase? 3. I don't have enough USB ports. I have three USB3 ports that need to be connected to a mouse, the Komplete Audio 6 interface, and an external HD for sample storage. I don't have another port for the small keyboard MIDI controller that I want to add. Is it OK to use any combination of these four devices with a USB hub? I don't want to mess with the Komplete Audio 6, but will everything be OK with the MIDI controller and the mouse sharing a USB hub? 4. My external HD for samples is a USB 2 drive. Does it matter that it's not USB 3 if I'm only using it for samples and not for recording? Is it correct that sampler sounds will just get loaded into memory, so it won't affect performance if I use this older external HD? Thanks, DAW experts.