5.25" to 3.5" Drive Bay HDD Adapter and USB Connector

Like the name says, this is a USB connector that fits into your 5.25" drive bay. Retro beige, of course, it fits a 3.5" hard drive (2.5" with yet another adapter, I guess). Comes with a dual port USB connector that plugs into your mainboard header (note: is NOT a USB hub).

New old stock. Exact image shown.