This product specification was printed from on 4/3/2024, 12:51:02 AM.
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Product Information
Serial Number: SMO-F551 / S551
Retail Price: RM8,950.00

Sony SMO-S551 -- 5.2 GB, 5.25-inch MO External SCSI Drive

- 5.2 GB Capacity ISO Compliant Drive

- 5 MB/s Data Transfer Rate - 20% Increase Over Previous Generation Drive

- 25 ms Average Access Time for Quick Access to Data

- Backward Compatibility to All Generations of ISO Standard 5.25-inch Media

5.2 GB Capacity ISO Compliant Drive
The first 5.2 GB 5.25-inch Magneto Optical drive on the market, the SMO-S551 provides up to 5.2 GB capacity in an ISO compliant drive design. Backward compatibility is a key feature in protecting your investment in existing data archives, and the 551 series meets this requirement. These drives not only ready the latest 5.2 GB, 4.8 GB, and 4.1 GB media, but are compatible with all previous generations of 5.25-inch MO media. The 551 can read and write to 2.6/2.3 GB media, and read 1.3/1.2 GB and 650/600 MB media.

Improved data throughput
Along with increased capacity, the 551 series drives also deliver higher data transfer rates. With a sustained data transfer rate of up to 5 MB/s, the 551 series is up to 20% faster than previous drive generations. A fast 25 ms access time, a large 4 MB data buffer, and a fast industry standard SCSI-2 interface also help speed access to your critical data.

Compact size, low power
The SMO-S551 MO drive is an External SCSI drive uniy. In addition, low power requirements, less than 15 W, reduces the demand on your system power supply.

High reliability
As a key innovator of MO technology, Sony has years of experience in the design, development, and manufacturing of 5.25-inch MO drive. With their rugged construction and precision design, the 551 series drives can deliver years of reliable performance, with an MTBF of up to 100,000 Power-On-Hours and MSBF of more than 750,000 cycles.

Model Type: External Drive
Product Configuration: Kit

Media Maximum: 5.2 GB
Hardware Maximum: 5.2 GB

Transfer Rate:
Burst Transfer Rate: 3.0 MB/s (Async., Max.)
10.0 MB/s (Sync., Max.)
Sustained Transfer Rate: 5.07 MB/s to 2.48 MB/s (5.2 GB media)
4.79 MB/s to 2.31 MB/s (4.8 GB media)
4.06 MB/s to 1.97 MB/s (4.1 GB media)

Access Time: 25 ms (Avg., Typ.)
Latency: 8.3 ms / 9.1 ms (Avg.)
Rotational Speed: 3,300 rpm / 3,600 rpm

Buffer Memory: 4 MB

Interface: SCSI-2 Fast

Loading Mechanism: Motorized load and eject

MTBF: 100,000 POH
MSBF: More than 750,000 Cycles
MTTR: 30 Minutes
Bit Error Rate: Less than 10(-17)

Physical Dimensions:

Mounting: Horizontal or vertical

Power Requirements: DC 5 V +/- 5%
Power Consumption: 14.8 W (Typ.)

Operating Temperature: 50o C to 450o C
Operating Humidity: 10% to 90% (non-condensing)
Operating Acoustic Emissions: 45 kb (A) (Max.)