Dell Dimension XPS H266 Service Manual page 29

Table 1-5. Technical Specifications (continued)
System clock frequency . . . . . . 66 MHz (matches external processor speed)
Diskette/communications
ports frequency . . . . . . . . . . . . . 24 MHz (derived from system clock)
SIMM sockets . . . . . . . . . . . . . . four
SIMM capacities . . . . . . . . . . . . 16 and 32 MB
Minimum RAM . . . . . . . . . . . . 32 MB
Maximum RAM . . . . . . . . . . . . 128 MB EDO
Secondary cache . . . . . . . . . . . . 512-KB pipelined write-back SRAM on SEC
Memory access time:
tRAC . . . . . . . . . . . . . . . . . . 60 ns
tCAC . . . . . . . . . . . . . . . . . . 15 ns
BIOS address . . . . . . . . . . . . . . F0000h
Externally accessible:
Desktop chassis. . . . . . . . . . four total: two bays for 5.25-inch diskette drives,
Mini tower chassis . . . . . . . five total: two bays for 5.25-inch diskette drives,
Internally accessible
(both chassis) . . . . . . . . . . . . . . two bays for 1-inch-high EIDE or SCSI hard-
System Clocks
Memory
cartridge
Drive Bays
tape drives, or CD-ROM drives; one bay for a
3.5-inch diskette drive or tape drive; and one bay
for a 3.5-inch diskette drive
tape drives, or CD-ROM drives; two bays for
3.5-inch diskette drives or tape drives; and one
bay for a 3.5-inch diskette drive
disk drives
System Overview 1-19