External SSD not showing up.

emerica0250

Honorable
Feb 3, 2013
27
0
10,530
Hi, I bought a 240 GB ssd, and i bought 2 different external cases. they are both usb 3.0. When i plug them into my pc, the plug and play thing pops up for just half a second. when i look in device manager, it shows "ASMT 2105 USB Device" so i know it connects to the computer. when i look in disc management, I think, not sure tho, that there is a disc that is the ssd, but it says 223 gb, unallocated space. Idk what to do to get it to show up. thank you.