Custom made by cece-mods, Commodore 64 (Breadbin/Breadbox models) Multi ROM board. 
There are 8 Kernal ROM's programmed which can be easily selected by using the rotary
switch.

The multi ROM adapter has gold plated rounded pins for better electrical
connection and easier fitment.
 
* This is a replacement for the MOS 901227 ROM (2364)
* This is designed to replace the original C64 kernal ROM chip which needs
to be in an IC socket. 
 
Genral Rotary Switch Settings:
0 - Original Kernal [901227-03]
1 - 64er v1
2 - DeadTest (781220)
3 - DolphinDos 2.0
4 - MemoStar
5 - SD2IEC22 2.2
6 - SX-64 2.0 Original Kernal
7 - TurboDos 3.0
 
** This device is not compatible with the C64C (MKII) as it uses a 16k ROM)

Please take care to insert the adapter to the correct orientation.
Pin 1 top left, Pin 24 top right. (Marked on the PCB). You'll risk damage to the adapter and your Commodore 64 if its not inserted correctly.