This manual covers the EZ505 motherboard used in Lenovo systems. It explains how to install the CPU, memory modules, and expansion cards, and describes the layout of connectors and jumpers.
Key sections include CPU installation guidelines, memory slot specifications, detailed connector pin‑outs (AGP, PCI‑X, PCI, IDE, USB, Ethernet, audio, and SCSI), CMOS reset procedures, and supported operating systems for single‑ or dual‑CPU configurations. This manual is written in Chinese.
| Memory Controller | Intel E7505 |
|---|---|
| I/O Controller | Intel 82801DB |
| Memory Slots | 4 x 184‑pin DDR, dual‑channel Registered ECC DDR266 |
| Supported Memory | Registered ECC DDR266 |
| AGP Slot | 8X |
| PCI‑X Slots | 64‑bit 100 MHz, supports RAID |
| PCI Slots | 32‑bit 33 MHz |
| IDE Interface | Supports ATA 33/66/100, up to four devices |
| USB Ports | USB 2.0 |
| Integrated Ethernet | Broadcom BCM5703C |
| Integrated Audio | AC97 |
| Integrated SCSI Controller | LSI 53C1030 Ultra320 |
Power off the system, remove the power connector, then short pins 2 and 3 of the BAT1 jumper.
The board accepts four 184‑pin DDR modules, supporting dual‑channel Registered ECC DDR266 memory.
It includes IDE connectors supporting ATA 33/66/100 (up to four devices) and an Ultra320 SCSI controller.