跳至主要内容

HP SFP Basis: J4858C vs J4859C

As an important component of networking accessories, HP ProCurve transceivers are wildly applied to their relevant switches or routes. HP SFP consists of three versions: revision A, revision B and revision C. Actually, there is no much difference between these three versions. Some enrichments will merely be added in the newest version. The “revision C” SFPs, such as J4858C, J4859C and J4860C, are supported in all ProCurve products with SFP ports. In this article we will introduce the basis of “revision C” and place emphasis on HP SFPs: J4858C vs J4859C.

What Is J4858C?

HP SFP J4858C transceiver module is a small form-factor pluggable Gigabit SX transceiver and designed for a wide range of HP equipment with high performance and reasonable price (FS.COM: US$ 10.00). J4858C SFP provides 1000Base-SX throughput up to 550m over multimode fibre (MMF) at a nominal wavelength of 850nm by using a LC connector. This transceiver is hot-swappable input/output device which allows a Gigabit Ethernet port to link with a fibre optic network and can be mixed and deployed with other OEM or third party transceivers.
J4858C

What Is J4859C?

HP SFP J4859C is a 1000Base-LX SFP 1310nm 10km transceiver module which provides a low cost (FS.COM: US$ 12.00) and high-performance connection. It is compatible with all HP series switches and modules with SFP ports. As a small form-factor pluggable (SFP) Gigabit LX transceiver, it provides a full-duplex Gigabit solution up to 10 km (single mode) or 550 m (multimode).
J4859C

J4858C vs J4859C: What Are the Differences?

Although HP SFP J4858C and J4859C can be used in any HP ProCurve switches with SFP ports as stated above, they still have some differences.
Form Type SFP SFP
Wavelength 850nm 1310nm
Interface LC duplex LC duplex
Cable Type MMF MMF*/SMF**
TX Power -9.5 ~ - 3dBm -9.5 ~ -3dBm
Commercial Temperature Range 0 to 70°C (32 to 158°F) 0 to 70°C (32 to 158°F)
Max Data Rate 1000Mbps 1000Mbps
Max Cable Distance 550m over OM2 MMF 10km over SMF
Optical Components VCSEL 850nm FP 1310nm
DOM Support No No
Receiver Sensitivity < -17dBm < -23dBm
Protocols MSA Compliant IEEE 802.3z SFF-8472 MSA Compliant IEEE 802.3ah-2004
According to the comparison chart, you should have an intuitive knowledge about HP SFPs: J4858C vs J4859C in the aspects of wavelength, cable type, max cable distance and etc. The larger network you need, the higher the cost of pluggable optical transceiver modules will be. In order to significantly reduce expenditure, it is possible to use HP compatible J4858C and J4859C transceivers.

Conclusion

To sum up, we have discussed the basic concept and showed the differences between HP SFP J4858C and J4859C. As a third party OEM/ODM manufacturer and supplier, FS.COM can also provide these two types of HP compatible SFP transceivers to meet your data center needs. You can make a choice based on your different demands and situations. Except HP, we can supply compatible fiber optic transceiver modules coming from other brands, like Cisco, Dell and Juniper etc with a competitive price.
标签：

评论

发表评论

此博客中的热门博文

How to Connect Ethernet Switch, Router and Modem

In the computer networking world, the three most ubiquitous pieces of equipment are Ethernet switch, router and modem. These are applied everywhere from data center to network connections in your own home. However, despite the importance of these three pieces of equipment, some people are oblivious or confused to their internal functions and connection mode. So in this article, we will attempt to explain the difference between each piece of equipment and introduce the common way to connect Ethernet switch, router and modem. What Is the Difference Between Ethernet Switch, Router and Modem From a physical perspective, a modem, router and Ethernet switch look very similar. Nevertheless, there are key differences between them internally and functionally with relevant purposes on a network. Switch: Bridge Your Devices in a Network An Ethernet switch is commonly referred to as a multi-port network bridge that processes and routes data on a data link layer (layer 2) and sometimes...
发表评论
阅读全文

24 Port Switch SFP Port vs RJ45 Port: How to Choose?

Gigabit switch that offers greater speed and compatibility continues to gain in popularity in the realm of networking world. In the present market, Gigabit switch generally has two kinds of ports: SFP port vs RJ45 port. Different ports are endowed with relevant sizes and specifications which prevent the incorrect type of connector from being plugged into them. So what are the differences between SFP port and RJ45 port of the Gigabit switch? And how to choose the proper one from them? In this article we will take 24 port switch as an example to explore the distinctions and provide some considerations when choosing SFP port vs RJ45 port. Comparisons Between 24 Port Switch SFP Port vs RJ45 Port 24 Port Switch with SFP Port Built-in SFP ports on 24 port switch enable optical or copper links by inserting the corresponding SFP module: fiber SFP or copper SFP. When SFP port is inserted in 1G copper SFP module, the Ethernet copper cables (Cat5e, Cat6 and Cat7) must be used for data t...
发表评论
阅读全文

48 Port PoE Switch: Managed vs Unmanaged?

It is generally known that Power over Ethernet (PoE) technology is developed to satisfy the needs of connectivity to network devices like IP cameras, VoIP phones and Wireless Access Points (WAP). As a consequence, PoE switch is required to be capable of supporting PoE devices. There are 8 port, 24 port and 48 port PoE switches in the market. And for each type, managed PoE switch and unmanaged PoE switch are available. 8 port and 24 port PoE switches have been explained in previous posts. So today’s topic is about 48 port PoE switch managed vs unmanaged. 48 Port PoE Switch: Why Choosing Managed Over Unmanaged? 48 port managed PoE switch can expand the long-range flexibility of your network and adapt to changing environments. With organization grows, your business needs will continue to increase. So it is wise to deploy 48 port PoE switch which can respond to your dynamic business demands. 48 port PoE switch managed can be configured and it can prioritize LAN traffic to make the ...
发表评论
阅读全文