1U (43.3mm) chassis is commonly used in data centers for space-saving's think, however, the expandability may be sacrificed in the slim form factor.
ASUS optional PIKE (Proprietary I/O Kit Expansion) meets the demand of direct SAS RAID upgrade on original servers, and what important is that it is connected through a unique slot to the server and will not occupy the slot 6 in 1U chassis, therefore no expansion capability will be given up.
The ASUS unique PIKE provides customers with multiple I/O solutions. It helps upgrade from SATA storage to SAS storage directly, support various RAID function, without any other hardware upgrade.
On the other hand, the PIKE kit also reduces the qualification resources for testing and inventory management efforts for customers.
Moreover, ASUS 6Gb/s PIKE cards are backward compatible with existing 1.5Gb/s SATA and 3Gb/s SAS/SATA products and infrastructure. Upgrading only the PIKE card immediately improves performance with larger capacity and better signaling, making this a great upgrade option for consumers.
Multiple PIKE solutions for Different Usage

|
Intel Platform |
MB Model name |
PIKE series |
|
PIKE 6480 |
PIKE 2008 |
PIKE 2008/IMR** |
PIKE 2108 |
|
5520 IOH |
Z8PH-D12 SE/QDR* |
V |
V |
V |
V |
|
Z8PH-D12/IFB* |
V |
V |
|
|
|
Z8PE-D18 |
V |
V |
V |
V |
|
Z8PE-D12X |
V |
V |
V |
V |
|
Z8PE-D12 |
V |
V |
V |
V |
|
5500 IOH |
Z8NR-D12 |
V |
V |
V |
V |
|
Z8NH-D12* |
V |
V |
V |
V |
|
Z8NA-D6 |
V |
V |
V |
V |
|
3420 PCH |
P7F-E |
V |
V |
V |
V |
|
C204 PCH |
P8B-E/4L |
V |
V |
V |
V | * The MB was validated with the PIKE series by using the riser cards. **PIKE 2008/IMR support max 8PD and 2VD |