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The EM 525 AT is the optimal price/performance Ethernet adapter for Industry Standard Architecture (ISA) bus PC workstations. With its high throughput and efficient CPU utilization, the EM525 AT adapter is the perfect workstation complement to your high performance eMASTER+ server adapters. And, EM525 AT is optimized for 486 and Pentium workstations for maximum performance advantages.
Small Image of EM-525
DownloadsDocumentationTechnical Specifications

Note: Only drivers that are not included or embedded within a supported operating system are listed below. To see a complete list of supported operating systems see the Product Specifications

Select your operating system or software below




Microsoft DOS

Hardware Installation
em525 at key features (html 71 kb)
Installing Drivers or Software
adaptec os/2 driver (html 74 kb)
dos ndis driver (html 76 kb)
dos ndis client (html 69 kb)
lantastic and adaptec odi (html 76 kb)
installing the dos odi driver (html 73 kb)
odi module installation (html 68 kb)

Bus System Interface Type

16-bit programmed I/O
Limited lifetime warranty

Systems Supported

IBM PC/AT and compatible ISA based machines

Standards Compliance

Ethernet IEEE 802.3 10BASE-T
Ethernet IEEE 802.3 10BASE-2
Ethernet IEEE 802.3 10BASE-5
FCC Class B Radiation compliant
UL rated PCB

Interface Connections


Ethernet Controller

Intel 82595 LAN coprocessor chip

Board Dimensions

8.1" x 5"

Power Consumption

+ 5 volts @ 2.0 Amp max
+12 volts (for MAU only)

Operating Characteristics

Temperature: 0° C to 50° C (31 to 131° F)
Relative Humidity: 5% to 85% non-condensing
Altitude: 3000m maximum

MTBF (mean time between failures, Bellcore)

Calculated MTBF >100,000 hours