The key is sort of an ignition key. Its three positions mean: 0 as off, force power off; 1 as on for normal operation; and third is a locked position for server operation.
My 950 meanwhile received a PPC upgrade. This way, the user can choose, if the 68040 should run @ 40 MHz, or if the PPC 601 should run @ 66 MHz with 1 MB L2 cache.
|CPU||Motorola 68040 @ 33 MHz
added PPC upgrade 601@66 MHz, 1 MB L2 cache
16 slots for 30 pin SIMMs are filled
|Graphics||1 MB VRAM installed (up to 2MB possible in 4 slots)|
driving a 1152x870 @ 75Hz in 256 colours
|Storage Devices||SCSI2SD adapter with a 4 GB SD-card|
Floppy disc drive
5 NuBus slots|
1 PDS slot
10 MBit AAUI Ethernet
2 serial ports