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24 Chapter 1
NOTE: Above table lists some system memory configurations. You may combine DIMMs with various
capacities to form other combinations. .
Memory Combinations
Slot 1 Slot 2 Total Memory
256/512MB 0 MB 256MB/512MB
256/512MB 128MB 384MB/640MB
256/512MB 256MB 512MB/768MB
256/512MB 512MB 768MB/1024MB
LAN Interface
Item Specification
Supports LAN protocol 10/100 Mbps
LAN connector type RJ45
LAN connector location Right side
Modem Interface
Item Specification
Data modem data baud rate (bps) 56K
Supports modem protocol V.90 MDC or Billionton
Modem connector type RJ11
Modem connector location Right side
Hard Disk Drive Interface
Item Specification
Vendor &
Model Name
IBM 20G IBM 30G IBM 40G Toshiba
40G
(MK4018)
Hitachi
20G
DK23DA-
20F
Hitachi
30G
DK23DA-
30F
Hitachi
40G
DK23DA-
40F
Capacity (MB) 20000 30000 40000 40000 20000 30000 40000
Bytes per
sector
512 512 512 512 512 512 512
Data heads 2 3 4 4234
Drive Format
Disks1222122
Spindle speed
(RPM)
4200 RPM 4200 RPM 4200 RPM 4200 RPM 4200 RPM 4200 RPM 4200 RPM
Performance Specifications
Buffer size 2048KB 2048KB 2048KB 2048 512KB 2048KB 2048KB
Interface ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5
Max. media
transfer rate
(disk-buffer,
Mbytes/s)
130~245 125~241 130~245 156.9~
290.4
149.6~
277.6
149.6~
277.6
149.6~
277.6
Data transfer
rate
(host~buffer,
Mbytes/s)
100 MB/
Sec.
Ultra DMA
mode-5
100 MB/
Sec.
Ultra DMA
mode-5
100 MB/
Sec.
Ultra DMA
mode-5
100 MB/
Sec.
Ultra DMA
mode-5
100 MB/
Sec.
Ultra DMA
mode-5
100 MB/
Sec.
Ultra DMA
mode-5
100 MB/
Sec.
Ultra DMA
mode-5
DC Power Requirements
Voltage
tolerance
5V(DC) +/-
5%
5V(DC) +/-
5%
5V(DC) +/-
5%
5V(DC) +/-
5%
5V(DC) +/-
5%
5V(DC) +/-
5%
5V(DC) +/-
5%
SG_TM420_Ch1.fm Page 24 Thursday, September 26, 2002 9:23 AM