{"id":9482201760002,"title":"TP-Link TL-SM321B-2 1000Base-BX WDM Bi-Directional SFP Module","handle":"tp-link-tl-sm321b-2-1000base-bx-wdm-bi-directional-sfp-module","description":"\u003cp\u003eThe TP-Link TL-SM321B-2 is a 1000Base-BX WDM Bi-Directional SFP Module designed for single-mode fiber networks. It uses Wavelength Division Multiplexing (WDM) technology to enable simultaneous bi-directional data transmission over a single fiber strand, reducing infrastructure costs. This module supports data rates up to 1Gbps and transmission distances up to 2km, making it suitable for mid-range campus networks, enterprise setups, and fiber extensions.\u003c\/p\u003e\u003cp\u003eFeaturing an LC duplex connector and transmit\/receive wavelengths of 1310nm and 1550nm, the TL-SM321B-2 ensures reliable and high-performance connectivity. It is compatible with standard SFP slots on TP-Link and other networking devices, allowing seamless integration into existing network infrastructures. The compact form factor and robust performance make it an economical solution for expanding fiber networks.\u003c\/p\u003e\u003cp\u003eThis module is ideal for bandwidth-intensive applications such as video conferencing and cloud-based services, providing stable and secure connectivity. With its efficient design and long-distance transmission capabilities, the TL-SM321B-2 delivers outstanding value for businesses seeking reliable fiber connectivity.\u003c\/p\u003e\n\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:auto;margin:0 0 1em\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e1000Base-BX WDM Bi-Directional SFP Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eLC duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eWavelengths\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e1310nm (Tx) \/ 1550nm (Rx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eTransmission Distance\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eUp to 2km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eData Rate\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e1Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eWorks with standard SFP slots on TP-Link and other networking devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top\"\u003eApplications\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top\"\u003eMid-range campus networks, enterprise setups, and fiber extensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","published_at":"2026-07-02T15:44:18+08:00","created_at":"2026-07-02T15:44:14+08:00","vendor":"TP-Link","type":"","tags":["1000Base-BX","bi-directional","Created by Product Upload","networking","SFP module","single-mode fiber","TL-SM321B-2","TP-Link","WDM"],"price":3772,"price_min":3772,"price_max":3772,"available":true,"price_varies":false,"compare_at_price":4526,"compare_at_price_min":4526,"compare_at_price_max":4526,"compare_at_price_varies":false,"variants":[{"id":48069405933826,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"TL-SM321B-2","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"TP-Link TL-SM321B-2 1000Base-BX WDM Bi-Directional SFP Module","public_title":null,"options":["Default Title"],"price":3772,"weight":500,"compare_at_price":4526,"inventory_management":null,"barcode":"6935364072940","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-412952.jpg?v=1782978256","\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-402597.jpg?v=1782978256","\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-737735.jpg?v=1782978256","\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-851470.jpg?v=1782978256","\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-132247.jpg?v=1782978257"],"featured_image":"\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-412952.jpg?v=1782978256","options":["Title"],"media":[{"alt":"TP-Link 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TL-SM321B-2 1000Base-BX WDM Bi-Directional SFP Module","id":39754579476738,"position":5,"preview_image":{"aspect_ratio":1.572,"height":514,"width":808,"src":"\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-132247.jpg?v=1782978257"},"aspect_ratio":1.572,"height":514,"media_type":"image","src":"\/\/lioncityco.com\/cdn\/shop\/files\/tp-link-1000base-bx-wdm-bi-directional-sfp-module-tl-sm321b-2-132247.jpg?v=1782978257","width":808}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eThe TP-Link TL-SM321B-2 is a 1000Base-BX WDM Bi-Directional SFP Module designed for single-mode fiber networks. It uses Wavelength Division Multiplexing (WDM) technology to enable simultaneous bi-directional data transmission over a single fiber strand, reducing infrastructure costs. This module supports data rates up to 1Gbps and transmission distances up to 2km, making it suitable for mid-range campus networks, enterprise setups, and fiber extensions.\u003c\/p\u003e\u003cp\u003eFeaturing an LC duplex connector and transmit\/receive wavelengths of 1310nm and 1550nm, the TL-SM321B-2 ensures reliable and high-performance connectivity. It is compatible with standard SFP slots on TP-Link and other networking devices, allowing seamless integration into existing network infrastructures. The compact form factor and robust performance make it an economical solution for expanding fiber networks.\u003c\/p\u003e\u003cp\u003eThis module is ideal for bandwidth-intensive applications such as video conferencing and cloud-based services, providing stable and secure connectivity. With its efficient design and long-distance transmission capabilities, the TL-SM321B-2 delivers outstanding value for businesses seeking reliable fiber connectivity.\u003c\/p\u003e\n\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:auto;margin:0 0 1em\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e1000Base-BX WDM Bi-Directional SFP Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eLC duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eWavelengths\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e1310nm (Tx) \/ 1550nm (Rx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eTransmission Distance\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eUp to 2km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eData Rate\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003e1Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top;border-bottom:1px solid rgba(128,128,128,0.16);border-bottom:1px solid color-mix(in srgb,currentColor 12%,transparent)\"\u003eWorks with standard SFP slots on TP-Link and other networking devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:0.4em 0.75em 0.4em 0;opacity:0.65;vertical-align:top\"\u003eApplications\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:0.4em 0;vertical-align:top\"\u003eMid-range campus networks, enterprise setups, and fiber extensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e"}