Acer 2420 manual Wireless Module 802.11b/g optional device, Hard Disk Drive Interface

Bluetooth Interface

Item	Specification
Data throughput	723 bps (full speed data rate)
Protocol	Bluetooth 1.1 (Upgradeable to Bluetooth 1.2 when SIG
	specification is ratified).
Interface	USB 1.1
Connector type	Mini-USB

Wireless Module 802.11b/g (optional device)

Item	Specification
Chipset	Built-in ICH6-M
Data throughput	11~54 Mbps
Protocol	802.11b+g
Interface	Mini-PCI type II (What does PCI Bus means on the system block
	diagram?)

Hard Disk Drive Interface

Item
Vendor &	Seagate 40G ST9402112A	Seagate ST96812A	TOSHIBA MK8025GAS
Model Name	Toshiba MK4025GAS	Seagate ST960821A	HITACHI HTS421280H9AT00
	Hitachi HTS421240H9AT00	Toshiba MK6025GAS	SEAGATE ST9808210A
	WD WD400UE-22HCT0	HGST HTS541260H9AT00	SEAGATE ST98823A
	Samsung M40MP0402H	WD WD600UE-22HCT0	TOSHIBA MK8026GAX
			HGST HTS541280H9AT00
			WD WD800UE-22HCT0
Capacity (MB)	40000	60000	80000
Bytes per	512	512	512
sector
Data heads	2	3 (for Hitachi and Seagate)	4 (for Hitachi)
		4 (for Toshiba)	3 (for Seagate)
Drive Format
Disks	1	2	2
Spindle speed	4200 RPM	4200 RPM	4200 RPM
(RPM)
Performance Specifications
Buffer size	2048KB	8192KB	8192KB
Interface	ATA/ATAPI-6; ATA-6	ATA/ATAPI-6; ATA-6	ATA/ATA-6; ATA-6
Max. media	372	350	350
transfer rate
(disk-buffer,
Mbytes/s)
Data transfer	100 MB/Sec.	100 MB/Sec.	100 MB/Sec.
rate	Ultra DMA mode-5	Ultra DMA mode-5	Ultra DMA mode-5
(host~buffer,
Mbytes/s)
DC Power Requirements
Voltage	5V(DC) +/- 5%	5V(DC) +/- 5%	5V(DC) +/- 5%
tolerance

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