General hardware details and setup instructions can be found in the following IBM publication:
The guide has several illustrations of the unit and accessories, as well as instructions on opening it and adding in more system or video memory. All ports and connectors are detailed.
Series 300 has three models. They all look the same and share the same characteristics, but differ in their network interface:
| Product number | Network interface | Physical connector | Network controller |
|---|---|---|---|
| 8361-110 | 10BaseT | 8-pin modular jack | National Semiconductor DP83907VF AT/LANTIC II |
| 8361-210 | Token ring | ? | ? |
| 8361-341 | Twinax | ? | ? |
The common hardware characteristics are as follows:
| Feature | Name, value, etc. | Type | Comments |
|---|---|---|---|
| CPU type | PowerPC 403GCX | ? | Features an MMU |
| CPU clock speed | 66 MHz (or 88 MHz?) | - | (unconfirmed) |
| CPU L2 cache (?) | 64K | 2 × ISSI IS61C256AH-15J | L2 cache or something else? "32K x 8 high-speed CMOS static RAM (15 ns)" |
| RAM | 16 MB in the standard factory configuration | 60 ns EDO 72-pin JEDEC standard SIMMs | Two SIMM slots; expandable up to 64 MB |
| Video controller | S3 Trio64V+ | 86C765 | The native IBM operating system software for Network Station 300 apparently only supports 8-bit (256-color) modes, even though the chip itself could do 16-bit and 24-bit modes as well. |
| Video RAM | 1 MB | 2 × Samsung Electronic KM416C254DJ-5 | Two __?__ sockets; expandable to 2 MB. "256K x 16Bit CMOS dynamic RAM with extended data out, Vcc=5.0V, 50ns, 8ms refresh period in 40-pin SOJ package. Operational temperature range from 0°C to 70°C" |
| I/O controller | National Semiconductor SuperI/O | PC87303-IAT/VUL | Handles at least keyboard, mouse, serial port, IEEE 1284 parallel port, real-time clock |
| Sound | 8-bit, mono | ? | Built-in speaker, no outside connectors. |
| Network controller | (Varies by model) | (Varies by model) | See the above table for details |
| PCMCIA controller | ? | ? | (unconfirmed) |
| Flash memory / NVRAM | 512K | ST Microelectronics M29F040 | This must be where the Boot Monitor and its settings live. |