This is the exact set of 2. 
It works just list a Jumper Pak. 
Each is in good clean tested condition.
This is a Generic OS-7234 Old Skool Jumper Pak Pack.
This is NOT an Expansion Pak. 
Each has a Security Sticker on the side as pictured. 
It has good both side cartridge pins as pictured.  
N64 Have No boot Screen.
They are completely Cartridge drive.
You also need this Good Jumper Pack or Good Expansion Pak in the N64 with a Good Cartridge to get Video. 
Not all Jumper Pak or Expansion Paks will fix a No Video issue.
As Always you need to blow good on the end of your Game cartridge before putting it in which always helps. 
Many N64 Motherboards have No Video issues.