1. Surface Pro 1, 2, 3
Keyboard Name: Type Cover (Gen 1–3)
Connection: Magnetic + Pogo pins
Trackpad: Small (improved on Pro 3)
Backlight: Yes (from Pro 2 upward)
Material: Plastic
Special:
Pro 3 introduced larger size & better spacing
Compatibility:
Pro 1 & 2 share same size
Pro 3 uses a different, larger keyboard
2. Surface Pro 4, 5, 6, 7
Keyboard Name: Surface Pro Type Cover / Signature Type Cover
Trackpad: Larger glass trackpad (smooth & accurate)
Backlight: Yes (adjustable levels)
Material:
Standard: Plastic
Premium: Alcantara fabric (Signature version)
Key Experience:
Better key travel and quieter typing
Compatibility:
Fully interchangeable across Pro 4 → Pro 7
3. Surface Pro 7+, Pro X
Keyboard Name: Pro X Keyboard / Signature Keyboard
Design: Slightly slimmer & modern