This was a good laptop back in the day, there was regular laptop model and a swivel screen tablet model that used a (Wacom) digitizer pen. The X41 CPU is Pentium M, which has no PAE (Physical Address Extension) so you can't install Windows 10 and later on this machine. Windows 8.1 should install, as the PAE requirements were not introduced yet. Original OEM Driver only supported Windows XP and Windows 2000.
Processor: Intel Pentium M LV 758 (1.50GHz, 90nm technology, 2MB L2 Cache, 400MHz FSB)
Wireless: Intel PRO 2200BG or 2915ABG, Bluetooth optional
OS: Windows XP Home/Pro
Screen: 12.1″ TFT XGA (1024 x 768)
RAM: 256MB or 512MB PC-4200 DDR-2 SDRAM (Upgradeable to 1536MB Max)
Hard Drive: 1.8″ 20GB, 30GB, 40GB or 60GB @ 4200RPM
Battery: 2.5 hr (4-cell) 5.7 hr (8-cell) (extended-life battery option adds 3 – 4 hours of life on top of quoted numbers for each respective battery)
Ports: 2 USB 2.0 (1 IBM Powered USB 2.0), Infrared, expansion bus (for optional ThinkPad X4 Ultra Base Doc); external display; AC adapter; RJ-11 modem port;RJ-45 ethernet port; audio: headphone/line-out, external microphone.
Slots: 1 PCMCIA card slot, 1 Secure Digital card slot
Dimensions: 10.5″ x 8.3″ x 1.06″ (w x d x h) (with 8-cell battery it’s 10.5″ x 9.3″ x 1.06″)
Weight: 2.7lb with 4-cell battery, 3.2lb with 8-cell battery
