Lenovo ThinkCentre M55 User Manual

Extended AT commands
Command Function
&C_ &C0 Force Carrier Detect Signal High (ON)
&C1 Turn on CD when remote carrier is present
&D_ &D0 Modem ignores the DTR signal
&D1 Modem returns to Command Mode after DTR
toggle
&D2 Modem hangs up, returns to the Command
Mode after DTR toggle
&D3 Resets modem after DTR toggle
&F_ &F Recall factory default configuration
&G_ &G0 Guard tone disabled
&G1 Guard tone disabled
&G2 1800 Hz guard tone
&K_ &K0 Disable flow control
&K3 Enable RTS/CTS hardware flow control
&K4 Enable XON/XOFF software flow control
&K5 Enable transparent XON/XOFF flow control
&K6 Enable both RTS/CTS and XON/XOFF flow
control
&M_ &M0 Asynchronous operation
&P_ &P0 US setting for off-hook-to-on-hook ratio
&P1 UK and Hong Kong off-hook-to-on-hook ratio
&P2 Same as &P0 setting but at 20 pulses per
minute
&P3 Same as &P1 setting but at 20 pulses per
minute
&R_ &R0 Reserved
&R1 CTS operates per flow control requirements
&S_ &S0 Force DSR Signal High (ON)
&S1 DSR off in command mode, on in on-line
mode
&T_ &T0 Ends test in progress
&T1 Perform Local Analog Loopback Test
&T3 Perform Local Digital Loopback Test
&T4 Grant Remote Digital Loopback Test request
by remote modem
&T5 Deny Remote Digital Loopback Test request
&T6 Perform a Remote Digital Loopback Test
&T7 Perform a Remote Digital Loopback Test and
Self-Test
&T8 Perform Local Analog Loopback Test and
Self-Test
&V &V0 Displays Active and Stored Profiles
Appendix A. Manual modem commands 67

Lenovo ThinkCentre M55 Specifications

General

Tcase	61.4 °C
Bus type	FSB
Stepping	R0
Processor cache	2 MB
Processor cores	2
Processor model	E6300
System bus rate	- GT/s
Processor family	Intel® Core™2 Duo
Processor socket	LGA 775 (Socket T)
Processor codename	Conroe
Processing Die size	111 mm²
Processor frequency	1.86 GHz
Processor cache type	L2
Processor lithography	65 nm
Processor manufacturer	Intel
Processor front side bus	1066 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	65 W
Number of processors installed	1
CPU multiplier (bus/core ratio)	7
Number of Processing Die Transistors	167 M
Audio system	High Definition Audio
Product type	PC
Motherboard chipset	Intel® Q963 Express
Memory slots	2x DIMM
Internal memory	1 GB
Memory clock speed	667 MHz
Internal memory type	DDR2-SDRAM
Maximum internal memory	4 GB
Memory layout (slots x size)	2 x 0.5 GB
HDD speed	7200 RPM
HDD interface	SATA
Optical drive type	DVD-ROM
Total storage capacity	80 GB
Power supply type	AC
Power requirements	120 - 230 V
External drive bays	1 x 5.25\
Internal drive bays	1 x 3.5\
Networking features	Gigabit Ethernet
Intel segment tagging	Enterprise, Professional
Compliance industry standards	IEEE802.3, IEEE802.3u, IEEE802.3ab
On-board graphics card	Yes
Discrete graphics card model	Intel® GMA 3000
Maximum graphics card memory	- GB
Operating system installed	Windows Vista Business
USB 2.0 ports quantity	8
Firewire (IEEE 1394) ports	0
Cabling technology	10/100/1000Base-T(X)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Power supply	225 W
Chassis type	SFF
Product color	Black
Processor code	SLGW2
Processor ARK ID	27248
Processor package size	37.5 x 37.5 mm

Weight and Dimensions

Depth	358 mm
Width	310 mm
Height	88 mm
Weight	8500 g