Part Number: HD-WD400JD Regular price:$53.99On Sale:
Western Digital Caviar SE 3.5in 40GB Serial ATA Internal Hard Drive (WD400JD), 300 MB/s, 7200RPM, 8MB Cache
WD Caviar SE Serial ATA 7200 RPM hard drives have the features and capacities ideal for next-generation computers and low-end enterprise storage. Users benefit from enhanced Cache (8mb), a data transfer rate of 150 MB/s and improved cabling that enables greater system design flexibility. This is an OEM Product.
Features:
8 MB cache buffer: fast data transfer from a cache.
7200 RPM: high-performance rotational speed for high-capacity hard drives.
Fluid Dynamic Bearing (FDB) technology: improves hard drive reliability; reduces heat, vibration, and noise.
SecureConnectTM: provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives and cables. Also ensures backward compatibility with legacy SATA cables and backplanes.
FlexPowerTM: connector technology that accepts power from both industry-standard and new SATA power supplies.
Point-to-point bus configuration: utilizes the full bandwidth of each drive interface in a networked environment.
Hot plug support: ability to swap out a hard drive without having to power down the system or reboot promotes system design flexibility, data availability, and serviceability.
Backplane compatibility: promotes expandability and flexibility in system architecture.
Recommended: Western Digital's Serial ATA cable with SecureConnectTM provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives and cables; for use with Western Digital SATA drives only.
Specifications:
Model Number: WD400JD.
Performance:
General:
Rotational Speed: 7,200 RPM (nominal).
Buffer Size: 8 MB.
Average Latency: 4.20 ms (nominal).
Contact Start/Stop Cycles: 50,000 minimum.
Seek Times (Average):
Read Seek Time (Average): 8.9 ms.
Write Seek Time (Average): 10.9 ms (average).
Track-To-Track Seek Time: 2.0 ms (average).
Full Stroke Seek: 21.0 ms (average).
Transfer Rates:
Buffer To Host (Serial ATA): 1,200 Mbits/s (Max).
Buffer To Disk: 748 Mbits/s (Max).
Configuration:
Number of Heads (Physical): 1.
Formatted Capacity: 40,020 MB.
Capacity: 40 GB.
Interface: SATA.
Actuator Type: Rotary Voice Coil.
Number of Platters: 1.
Bytes Per Sector: 512.
User Sectors Per Drive: 78,165,360.
Servo Type: Embedded.
Dimensions:
Height: 1.028 Inches (Max).
Length: 5.787 Inches (Max).
Width: 4.00 Inches (+/- 0.010 inch).
Weight: 1.60 Pounds (+/- .10 lb).
Environmental:
Shock:
Operating Shock (Read): 65G, 2 ms.
Non-operating Shock: 300G, 2 ms.
Acoustics:
Idle Mode: 33 dBA (average).
Seek Mode 0: 35 dBA (average).
Seek Mode 3: 34 dBA (average).
Temperature:
Operating: 41o F to 131o F.
Non-operating: -40o F to 149o F.
Humidity:
Operating: 5-95% RH non-condensing.
Non-operating: 5-95% RH non-condensing.
Altitude:
Operating: -1,000 feet to 10,000 feet.
Non-operating: -1,000 feet to 40,000 feet.
Vibration:
Operating:
Linear: 10-300 Hz, 3.0G (0 to peak).
Random: 10-300 Hz, 0.008 g2/Hz.
Non-operating:
Low Frequency: 5-20 Hz, 0.195 inches (double amplitude).
High Frequency: 20-300 Hz, 4.0G (0 to peak).
Electrical:
Current Requirements:
12 VDC:
Read/Write: 450 mA.
Idle: 470 mA.
Standby: 23 mA.
Sleep: 23 mA.
5 VDC:
Read/Write: 800 mA.
Idle: 750 mA.
Standby: 330 mA.
Sleep: 200 mA.
Power Dissipation:
Read/Write: 12.80 Watts.
Idle: 9.50 Watts.
Standby: 1.90 Watts.
Sleep: 1.30 Watts.
Limited Warranty: One year from invoice date with Directron.com. 30-Day money back from receiving date with 15% restocking fee for non-defective returns on current market price. No credit or refund after 30 days. Customer is responsible for returning defective products including DOA due to manufacturer unless testing is paid before shipping. (cj082504)
Notes: (1) No SATA power cable or data cable come with this HD. (2) This OEM hard drives do not come with installation guide or manual. Please use our online hard drive Installation Guidelines and Troubleshooting Tips. (3) Hard drives should be installed by professionals or experienced PC users. (4) This 3.5" hard drive will not fit to most note books. (5) If you intend to install this drive in a 5.25" bay, you'll need a hard drive mounting kit.