A Small Computer System Interface (SCSI) connector, also pounced as [scuzzy" connector, is used for physically connecting and transferring data between computers and peripheral devices.
SCSI is the small computer system interface, which is an independent processor standard used for the system level interface between computer and intelligent devices (hard disk, floppy, optical drive, printer, scanner, etc.). It is an intelligent universal interface standard, which has the function of communicating with various types of peripherals. SCSI uses the standard software interface of ASPI (SCSI programming interface) to make the driver communicate with the SCSI adapter installed inside the computer. SCSI interface is widely used in high-speed data transmission technology on minicomputers. SCSI interface has many advantages, such as wide application range, multitask, wide bandwidth, low CPU utilization, and hot plug.
SCSI connectors type and interfaces
Centronics 50-pin connector: The Centronics 50-pin connector was once the most widely used SCSI connector. An external connector only, the Centronics is a SCSI-1 connector that looks the same as the Centronics cable that attaches to a parallel port printer. The Centronics 50-pin cable comes in male and female styles, and gender changers and cable converters are commonly available. Although used on older SCSI devices and external drive enclosures, this interface is no longer heavily used, due to its slow speed and short cable lengths.
SCSI SFF 8482: Also called "4x internal" by some vendors. This is a connector with the same form factor as SATA with the addition of a "bump" to key it specifically for SAS. (SATA drives can be plugged into SAS controllers, but SAS drives will not function with a SATA controller; hence, the necessity for the key bump on the connector.) As the name says, it's meant to be used internally, i.e., inside the computer case.
SCSI SFF 8484: Also called "32-pin" or "MultiLane". This is a high density connector usually intended to plug into the motherboard, controller, or backplane itself. Cables with this connector on one end usually have four individual SFF 8482 connectors on the other. Scsi Connector,Half Pitch Scsi Connectors,Scsi Lead Half Pitch Male,SCSI (SAS) Connectors,Female Scsi Connector,SCSI Connectors I/O Connectors,Manufacturers and Suppliers in China ShenZhen Antenk Electronics Co,Ltd , https://www.pcbsocket.com
[High-tech good product comprehensive report]
In terms of the overall LED market this year, the most intuitive feeling brought to the enterprise is that the money is getting harder and harder to earn, and the survival of the enterprise is increasingly severe.
Dr. Zhang Xiaofei, Chairman of Gaogong LED, once said that after 2018, the LED industry will have 2-5 scale enterprises, 3-5 industry leaders, including 10 billion business scale enterprises, non-listed companies in the chip field, Small package companies and companies with a turnover of less than 10 million will basically be eliminated.
In the next three years, the led lighting industry can be said to be the time to die and die. How led companies to develop their own space and seize the last opportunity has become a common problem facing the industry.
Taking led drive power as an example, with the continuous development of the LED industry , the quality requirements for the drive power supply are getting higher and higher, and the proportion of its cost to the cost of the lamp is also increasing year by year. However, the problems of lack of standardization and production scale limitation have not been solved. .
The so-called "third-tier enterprises sell products, second-tier enterprises sell technology, and first-class enterprises sell standards." Undoubtedly, standardized products are an inevitable trend for any processing and manufacturing industry to mature.
Although standardization has a long history in the LED industry, before the company only stayed at the "self-talking" standardization, it has not been implemented. By this year, the industry has once again mentioned the standardization requirements.
Ding Hua, general manager of Maoshuo Power LED Group, said, “Standardized products are an important guarantee for power supply stability. Only when the supply chain and product standardization can be realized, can the cost and application problems be solved.â€
Ding Hua believes that the future supply capacity will become the key to the LED power supply manufacturers to win the market. Once the scale is popular, the led power supply manufacturers will become more and more active in the market, and the market share and product competitiveness will be greatly enhanced. Upgrade.
In addition to the increasing standardization of voices, the LED driver power supply is equally hot for intelligent investment.
In the view of Liu Haibo, general manager of Zhongheng Paiwei, intelligent will dominate the future development trend of LED driving power. He believes that LED intelligent lighting puts three major requirements on driving power supply: ensuring energy saving effect, extending lamp life and facilitating management and maintenance.
“Urban and PPP modes are adopted for the construction of urban public lighting renovation intelligent lighting projects. The investment is huge, and the power quality is required to be excellent, reducing the number of resets.†Liu Haibo said that our constant power drive power source enables the realization of smart city lighting integrated operation system. become possible.
In order to facilitate unified management, Liu Hailang pointed out: "When the intelligent lighting system is large, in order to provide power input more conveniently, a centralized power supply scheme can be adopted, power distribution can be rationally performed, and power supply management and dimming control of the lighting system can be unified. ."
However, in the future drive power field, it is obviously not enough to grasp the above two trends. Especially in the case of oversupply, how to solve the price problem that everyone cares about? How to control the voice of the company in pricing is also worth pondering.
Zhao Nannan, sales director of Igor Lighting Industry Center, said that in order to take the initiative in different market supply and demand environment, it is necessary to make cost-effective products to grasp the pricing power from the source.
"At present, Igor's cost-effective product line continues its excellent production line in quality control, and the low price is not low quality. The price is only solved on the premise of comprehensive consideration and reasonable compression cost." Zhao Nannan said.
In addition, mastering the pricing power shows the urgency and necessity of enterprise transformation and upgrading.
The industry believes that LED enterprises have reached the key node of transformation and upgrading, and must accelerate the business model from low-end mode to innovation drive, quality win, and high-end service.
The above rough summary is not enough to clear the future of the driving power supply. From December 11th to 12th, Gaogong LED will join hands with the High-tech Industrial Research Institute to create the "2015 High-tech LED Annual Meeting", more than 500 Leading LED industry leaders will attend the conference to discuss LED lighting and share the industry feast.
High-density 50-pin connector: The high-density 50-pin connector is used on scanners and Jaz drives. It is one of the more common SCSI connectors and is usually used to connect SCSI-2 devices. Both ends of the cable are usually 50-pin male, while the sockets on the host adapter and external devices are 50-pin female.
DB 25-pin connector: The DB 25-pin or D Sub 25 is by far the most widely used connector. This connector is used for parallel and serial printers in addition to the many other devices available. Both ends of the cable are usually 25-pin male, while the sockets on the host adapter and external devices are 25-pin female. This cable is almost always an external connector.
Note: DB-25 SCSI CABLES are not compatible with and should not be used as serial or printer cables; serial cables and printer cables should not be used or attached to DB-25 SCSI adapters. You can short out the SCSI host adapter or the motherboard by using the wrong cable. Marking cables is the best way to avoid this.
IDC50 connector: The IDC50 is the most common internal SCSI connector. It is very similar to the standard IDE internal ribbon cable. The IDC50 SCSI cable is considerably wider then an IDE ribbon cable; in fact, it is usually the widest standard internal cable in use. This is a standard SCSI-2 10MBps internal SCSI cable. Many low-end cables have only two or three connectors, allowing for one or two devices to be attached to the cable. Seven-device cables are available, though they are often expensive and require a large case, as the cables may be four or five feet long.
High-density 68-pin connector: The high-density 68-pin connector is the SCSI connector of choice for SCSI-3 host adapters and peripherals. There is an internal ribbon cable version that looks very similar to the IDC50 connector. Many low-end cables have only two or three connectors, allowing for one or two devices to be attached to the cable. Seven-device cables are available, though they are often very expensive and require a large case, as the cables may be three or more feet long. Both ends of the external cable are usually 68-pin male, while the sockets on the host adapter and external devices are 68-pin female.
SCA 80-pin Micro-Centronics connector: SCA stands for Single Connector Attachment, a type of disk drive connector that includes connection pins for the power cables as well as the data wires. A SCA connector uses an 80-pin plug and socket to connect peripherals. This connector combines power, data channel, and ID configuration for fast installation and removal. SCA connectors are typically found only on high-end SCSI hard disks. The SCA interface was designed to provide a standard connection for systems using drives that can be hot-swapped. SCA makes swapping SCSI hard drives much easier than with traditional SCSI cables, plugs, and sockets. An adapter enables SCA drives to fit into standard SCSI enclosures.
Serial Attached SCSI SFF 8470: Also called "4x external" by some vendors. This is simply a version of the SFF 8484 that's meant to be used with external (i.e., not located within the case) drives.