display adapter

I'm working on my build and accidently touched the LCD display and now I have a smudge mark. What's the best way to clean it without making hairline scratches in the display? I think I read something awhile back that said it scratches really easy. Thanks in advance.

My understanding is that your NVMe M.2 > PCIe x16 adapter has limitations of PCIe x4 speeds as the bandwidth is limited to that amount on the motherboard. As interest seems to be growing for this graphics adapter solution to be used with Mini-STX boards & that ultra small form factor, do you...