The “American IIe” kit comes with a 24 pin Video ROM. The “Euro IIe” (video switch under the keyboard) comes with a 28 pin Video ROM.
Also included is an easy to follow set of install instructions to ensure quick setup and unlimited Tech Support (phone/email/forum) should you have any questions.
Apple's part number of the Enhanced ROMs:
CD – 342-0304-A
EF – 342-0303-A
If your CPU has '65C02' or '65C03' printed on it and the numbers of your ROMs match the numbers listed above then there is a good chance your IIe is already Enhanced and you don't need this kit. Perform a Self Test (Control, Closed-Apple, and Reset) and you should see low-res squares on the screen. If you see horizontal bars then you need this kit.
Chips pictured may be different than the ones you receive but will be 100% compatible.