Below is a list of others considerations for ThinkPad A20m systems

• Although you can upgrade the hard disk drive (HDD), it is not designed to be removed and reinserted on a regular basis.
• Repeated and frequent removal, for purposes other than to upgrade for greater capacity, can cause damage to the system.
• The Ultrabay 2000 HDD adapter is designed to provide this flexibility with a second HDD in the Ultrabay 2000.
• The system must be in hibernated or "power-off" mode when changing either the main battery or the second battery.
• Screen expansion (Fn+F8) does not cover the full display screen, leaving a small black border around the edge of the display.
• Video resolution of 800x600 @ 256 colors is not a supported resolution for DVD playback.

System Unit Approvals (AP, LA, CAN, EMEA)

• FCC Class-B Certified to comply with FCC Rules, Part 15
• VCCI Class B
• CISPR22B
• UL-1950
• CSA C22.2 No. 950
• UK-PTT
• JATE
• SASO
• IEC950
• CCIB (for China)
• BCIQ (for Taiwan)
• ACA (Australia)
• RSF449 (New Zealand)
• MPR-II (Sweden)
• CE Mark