Does the PC card slot on the TR only work with Sony manufactured cards?
It’s a standard PCMCIA (PC Card) slot. You can stick in any 32-bit PCMCIA card from any manufacturer. Depending on the device, it may just simply work or you might need a manufacturer supplied driver.
VAIO VGN-Z590N // Core 2 Duo 2.53GHz | 4GB RAM | 320GB 7200 RPM | 802.11a/b/g/n | Bluetooth 2.0 HP TC1100 // 1.1GHz | 1.5GB RAM | 100GB 5400RPM | 802.11a/b/g | Bluetooth 1.2 Daily Gear // Sony Ericsson X1i | Panasonic Lumix ZS3 Digicam