HP CQ57-489WM manual Support for the following batteries, Security, Operating system Preinstalled

Category	Description		Computer models	Computer models
			equipped with an AMD	equipped with an
			processor	Intel processor
Power requirements	65-W RC V HP Smart AC adapter with		√
	localized cable plug support (3-wire plug with
	ground pin, supports 3-pin DC connector)
	90-W PFC RC V EM HP Smart AC adapter			√
	with localized cable plug support (3-wire plug
	with ground pin, supports 3-pin DC connector)
	90-W PFC RC V HP Smart AC adapter with
	localized cable plug support (3-wire plug with
	ground pin, supports 3-pin DC connector)
	65-W RC V EM HP Smart AC adapter with
	localized cable plug support (3-wire plug with
	ground pin, supports 3-pin DC connector)
	Support for the following batteries:		√	√
	● 6-cell, 55-Whr, 2.55-Ah Li-ion battery
	● 6-cell, 47-Whr, 2.20-Ah Li-ion battery
Security	Security cable slot		√	√
Operating system	Preinstalled:		√	√
	● Windows 7 Home Basic (64- and 32-bit)
	● Windows 7 Home Premium (64-bit)
	● Windows 7 Professional (64-bit)
	● Windows 7 Starter (32-bit, not supported
		on computer models equipped with a
		500-GB hard drive)
	●	FreeDOS
Serviceability	End-user replaceable parts:		√	√
	●	AC adapter
	●	Battery
	●	Hard drive
	●	Memory modules (2)
	●	Optical drive
	●	WLAN module

6 Chapter 1 Product description