Acer 420 User Manual
Page 32
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
4
2
3
4
Drive Format
Disks
1
2
2
2
1
2
2
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