Epson 20 - Manual (Page 125)

3. Without disconnecting any cables, gently pull the card straight
up, out of the slot, and then turn it over and lay it on the power
supply.
Removing the SPF card
1. Unplug the disk drive cable from the SPF card as shown below.
Pull it straight up and out, then lay it to one side,
Installing Options 6-13