Product overview

 

 

Indicator

Meaning

 

 

Wireless

Green:

status

The wireless feature (the IEEE 802.11

 

standard) is on, and the radio link is ready

 

for use.

 

Blinking green:

 

Data is being transmitted.

 

 

Bluetooth

Green:

wireless

Bluetooth wireless feature is operational.

status

This indicator is on when Bluetooth

R

wireless feature is on and not in suspend

 

 

mode.

 

 

Num lock

Green:

 

The numeric keypad on the keyboard is

 

enabled. To enable or disable the keypad,

 

press and hold the Shift key, and press the

 

NumLk (ScrLk) key.

 

 

Caps lock

Green:

 

Caps Lock mode is enabled. To enable or

 

disable Caps Lock mode, press the Caps

 

Lock key.

 

 

Drive in

Green:

use

Data is being read from or written to the

 

hard disk drive, the diskette drive, or the

 

drive in the Ultrabay Enhanced device.

 

When this indicator is on, do not put the

 

computer into standby mode or turn off the

 

computer.

 

Note: Do not move the system while the

 

green drive-in-use light is on. Sudden physical

 

shock could cause drive errors.

 

 

Power-on

Green:

 

The computer is on and ready to use. This

 

indicator stays lit whenever the computer is

 

on and is not in standby mode.

 

 

Battery

Green:

status

The battery is in use and has enough

 

power. The ac adapter has charged the

 

battery completely.

 

Blinking green:

 

The battery is being charged, but still has

 

enough power to operate. (At regular

 

intervals, the indicator light turns off briefly.)

 

Orange:

 

The battery is being charged, but the

 

battery power is still low.

 

Blinking orange:

 

The battery needs to be charged. When

 

the indicator starts blinking orange, the

 

computer beeps three times.

 

 

(continued)

ThinkPad R50/R50p and R51 Series 49

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IBM R51 Series, R50p Series, R50 Series manual Indicator Meaning

R51 Series, R50 Series, R50p Series specifications

The IBM R50p Series, R50 Series, and R51 Series represent a notable lineage of ThinkPad laptops that were well-received for their robust features and business-friendly characteristics. Launched in the early 2000s, these laptops catered primarily to professionals and enterprises, offering a blend of performance, durability, and a suite of technologies that made them stand out in the market.

The R50p Series was particularly notable for its focus on high-performance computing. It featured powerful Intel processors, such as the Pentium M, and supported ample RAM capacity, which enhanced multitasking capabilities. This series was also equipped with dedicated graphics options, such as the ATI Mobility Radeon, making it suitable for tasks requiring graphic processing, including CAD applications.

The R50 Series continued this trend, balancing performance with affordability. It boasted a lightweight design, making it easier for professionals on the move. The R50 series introduced several connectivity options, including USB 2.0 ports, Ethernet, and optional Wi-Fi, allowing for seamless networking in office environments. The inclusion of a keyboard with a TrackPoint enabled users to navigate efficiently, a hallmark of the ThinkPad design philosophy.

The R51 Series took things a step further by enhancing performance and user experience. It offered improved battery life, which was a significant consideration for mobile professionals. The robust build quality, often referred to as "business rugged," ensured that these laptops could withstand the rigors of daily use. The R51 also featured an upgraded display for better visuals, contributing to more comfortable working conditions, especially for long hours.

In terms of security, these series employed various features like a fingerprint reader and an integrated Trusted Platform Module (TPM) for enhanced data protection. IBM's commitment to security and reliability was evident in these models, making them a preferred choice among enterprises.

Overall, the IBM R50p, R50, and R51 Series ThinkPads combined high-performance hardware with a range of features tailored to meet the needs of business users. Their durability, battery life, and emphasis on security made them lasting favorites for those seeking a dependable laptop for professional use. Even years after their release, these models are often regarded as symbols of IBM's legacy in the computing industry.