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ATP Electronics ProMax II CompactFlash Card
Author: Hellfire
Manufacturer: ATP Electronics
Source: ATP Electronics
Purchase: PriceGrabber
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ATP Electronics ProMax II CompactFlash Card
March 06, 2008

ATP Electronics might not be a company you are familiar with, but they have been manufacturing flash memory devices since 1991; years before the digital camera became a common household item. Their lineup includes many popular formats of flash memory cards, as well as a few models of USB flash drives, like the ToughDrive and Petito that were recently reviewed at

The Ultra Direct Memory Access (UDMA) interface has recently been implemented in digital SLR and other high end cameras, which allows for write speeds of up to 45 MB/second. With the right equipment, photographers can now shoot more high resolution pictures in less time, since they won't have to wait for the camera to write one picture before taking the next.

ATP Electronics has launched what they call the ProMax II line of UDMA ready CompactFlash cards designed to take full advantage of this new speed boost. They have provided a 4GB sample for review, and just to show the difference in transfer rates over a traditional card reader, they have provided a ProMax UDMA card reader, as well.

ProMax II CompactFlash Card Features and Specifications:

Before taking a closer look at the ATP Electronics ProMax II CompactFlash Card, let's take a look at some published data regarding its features and specifications.


Easy Installation
Excellent for DSLR cameras
UDMA 5 capable, for 300X read speeds of up to 45MB/s
CompactFlash Specification Revision 4.1 Compliant
Fully compatible in applications for Digital Cameras, PC, PDA, Application Specific Instrumentation
No battery required for data retention
Ultra-Reliable, Waterproof, and Shockproof
ATP 5 Year Limited Warranty
Hot insertion/removal
CE Approved


Sustained read capability: 45MB/s (UDMA Mode 5)

Physical Dimensions:

Type I CompactFlash Enclosure: 36.4 x 42.8 x 3.3mm (LWH)
Weight: < 10.0 grams (approx.)

Electrical Characteristics:

Voltage: 3.3V 5% or 5V 10%
High Performance Read Current: 65mA at 5V; 0 mA at 3.3V rms
High Performance Write Current: 65mA at 5V; 0 mA at 3.3V rms

Environmental Characteristics:

Temperature operating : -13 to 85 C
Temperature non-operating : -40 to 185 C
Humidity: 5 to 95% (max.) relative non-condensing
Vibration: 15Gs peak-to-peak Max
Shock: 2000G
Altitude: 80,000 ft Max.

Reliability Specifications:

Number of insertions: 10,000 minimum
Data retention: 10 years
Endurance: >100,000 cycles (read/write and erase)



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