IBM x3550 M4 plus 4x 2.5"
- Brand: IBM
- MPN: 81Y6657
- Part #: SVPIBM816657
- UPC: 883436143387
- Brand: IBM
- MPN: 81Y6657
- Part #: SVPIBM816657
- UPC: 883436143387
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IBM x3550 M4 plus 4x 2.5"
- Brand: IBM
- MPN: 81Y6657
- Part #: SVPIBM816657
- UPC:883436143387
![](https://www.pbtech.com/au/imgprod/S/V/SVPIBM816657__1.jpg?h=310320594)
Product URL: https://www.pbtech.com/au/product/SVPIBM816657/testimonials?testID=2214
Features
- Option 81Y6657 upgrades models with four hot-swap HDD bays to eight hot-swap HDD bays.
- Models A2x and A3x require H1110 to be replaced by M1115 or M5110 to support eight HDDs.