ASUS Unveils First Motherboards to Feature True USB 3.0 and SATA 6Gb/s Performance

October 28, 2009 // 6:02 p.m.

ASUS Unveils First Motherboards to Feature True USB 3.0 and SATA 6Gb/s Performance

ASUS P7P55D-E / P7P55D Series Delivers Blazing Data Performance with Onboard Expansion Bridge or Expansion Card

ASUS today announced a range of enhanced motherboard solutions that deliver true USB 3.0 and SATA 6Gb/s data throughput performance. The ASUS Xtreme Design P7P55D-E Series motherboard has onboard support while the ASUS Xtreme Design P7P55D Series utilizes the ASUS U3S6 PCIe x4 expansion card to deliver the latest USB and SATA data transfer capabilities. Equipped with the Intel® P55 Express chipset, the P7P55D-E / P7P55D Series supports the latest LGA 1156 socket for Intel® Core™ i7/Core™ i5 Processors. Additionally, they also feature exclusive Hybrid Technology—Hybrid Processor, Hybrid Phase, and Hybrid OS—to give users intelligent performance enhancement, active cooling, and rapid online access.

P7P55D-E_premium with colorbox

Faster than Ever—True USB 3.0 and SATA 6Gb/s Performance with Bridge Chip

ASUS’ unique expansion bridge* design fully unleashes USB 3.0 and SATA 6Gb/s transfer rates for both the P7P55D-E Series and the U3S6 expansion card. This specially-designed onboard IC doubles the bandwidth of the PCIe interface from Gen 1 to Gen 2, delivering ten times faster USB 3.0 throughput compared to the previous USB 2.0 standard. Additionally, by eliminating transmission bottlenecks, the expansion bridge increases hard disk read and write speeds by up to 50%**. Transferring a 20GB HD movie now takes less than 70 seconds, while a 4MB song requires less than 0.01sec. Similarly, by inserting the ASUS U3S6 PCIe x4 expansion card into P7P55D Series motherboards, users can achieve the same rapid throughput with the latest USB 3.0 devices and SATA hard disks.

Hybrid Features for Optimized Performance, Dynamic Cooling, and Rapid Online Access

The ASUS P7P55D-E/P7P55D Series includes new Xtreme Design innovations—Hybrid Processors, Hybrid Phase Technology and Hybrid OS for optimized performance and enhanced stability. Hybrid Processors enable intuitive, real-time overclocking and automatic performance tuning for users to gain the processing power and speeds associated with a higher-end CPU. For enhanced stability, the P7P55D-E and P7P55D Series include the world’s leading Hybrid Phase power feature, which combines multi-phase power delivery with real-time phase balancing to improve cooling of active components. Users can also rapidly access online applications such as Skype, Instant Messaging, and over 1,000 Flash-based games with Express Gate. Additionally, with Windows® 7 drivers included, users can conveniently start using Windows® 7 and experience its benefits.


ASUS P7P55D-E Premium Motherboard

CPU Socket

LGA1156 socket for Intel® Core™ i7/Core™ i5 processors


Intel® P55 Express Chipset


DDR3 2200 (O.C.)/1600/1333/1066MHz

Power Phase

48 Hybrid Phase****

PCIex16 Slots




Gbit LAN

x 2


10-ch HD, DTS


6x SATA 3Gb/s

1 x eSATA (by bracket)

1 x Ultra DMA

2 x SATA 6Gb/s


10 x USB2.0/1.1

(6 ports at back panel, 4 ports at mid-board)

2 x USB 3.0/2.0 (Rear)


2 ports (one at mid-board, one at back panel)

ASUS U3S6 Expansion Card

Internal Connectors

2 x SATA 6Gb/s ports for up to 2 SATA hard disk drives

Backward compatible with SATA 3Gb/s and SATA 1.5Gb/s hard disk drives

External Connectors


2 x USB 3.0 ports.

Backward compatible with USB 2.0/1.1 interface


Configuration Supported

PCIe x4 interface

Compatible with PCIe x4, x8, and x16 slots

Operating Systems Supported



Windows® 7/Vista/XP 32/64bit

Compatible Models

Maximus III Formula

P7P55D Deluxe






Features and


True SATA 6Gb/s and USB 3.0 Throughput: Native support for PCIe Gen2 bandwidth

Supports Hot Plug function

Supports Native Command Queuing (NCQ)


2 x Serial ATA 6Gb/s cables

1 x Support CD

1 x User manual

Form Factor

4.8” x 3” (12.2cm x 7.6cm)

Specifications are subject to change without prior notice. Please visit for more details.

* Product specifications and features may vary according to models.

** Performance may vary due to different system configurations.
**** Hybrid Phase = Xtreme Phase x T.Probe. Hybrid Phase equates power efficiency achieved in other power phase designs.

About ASUS

ASUS is a leading company in the new digital era, with an extensive product portfolio that includes notebooks, netbooks, motherboards, graphics cards, optical drives, desktop PCs, servers, wireless solutions, mobile phones and networking devices. Driven by innovation and committed to quality, ASUS designs and manufactures products that perfectly meet the needs of today's digital home, office and person. ASUS won 3,056 awards in 2008, and is widely credited with revolutionizing the PC industry with the Eee PC™. With a global staff of more than ten thousand and a world-class R&D design team, the company's revenue for 2008 was 8.1 billion U.S. dollars. ASUS ranks among BusinessWeek's InfoTech 100, and has been on the listing for 12 consecutive years.

ASUS Motherboards: No.1 in the World

ASUS is the No.1 motherboard brand in the world, commanding the biggest market share globally. Today, one in every three computers houses an ASUS Motherboard. ASUS is the pioneer of numerous innovations that have gone on to become industry standards. Recent examples include the Xtreme Phase power design, Stack Cool 3+ PCB, and anti-EMI shielding for safe operations. With its decades of expertise and dedication to pushing the envelope of motherboard design, ASUS is poised to continue leading the industry in motherboard performance, safety and reliability.
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