I recently got an Apple IIe that only came with an Apple I/O Controller card. I separately obtained two Disk II drives and a Disk II Interface Card. I removed the I/O Controller Card from Slot 6 and replaced it with the Disk II Interface Card, but when I try and start the computer up with the Interface Card installed, I get horizontal lines as shown in the photo. The computer works fine as long as the card is not installed. The card looks okay and I tried cleaning the contacts with some alcohol but it didn't change anything. Any ideas? I haven't really used an Apple II for 30 years so I'm a little rusty on the details and it's possible I'm doing something wrong.