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| Brand Name: Optfocus | Certification: CE&FC | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 100 pcs | 
| Delivery Time: 5-7 working days | Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram | 
| Shenzhen Optfocus Technology Co., Ltd. [Guangdong,China] | |
| Site Member | |
| Brand Name: SUNWISE | Certification: ROHS CE | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: Negotiable | 
| Delivery Time: jumper 3 ~ 7 days; fiber optic cable and equipment 7 ~ 15 days | Payment Terms: Western union,T/T,PayPal | 
| Sunwise Optical Communication Equipment Co.,Ltd [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Neuter, OEM | Certification: CE/FCC/RoHS/TUV/UL | 
| Model Number: 40G-QSFP-SR4-A | Minimum Order Quantity: 1PCS | 
| Delivery Time: Within 1-3 working days after PO confirmed | Payment Terms: T/T, Western Union, L/C | 
| Ascent Optics Co.,Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: SUNWISE | Certification: ROHS CE | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: Negotiable | 
| Delivery Time: jumper 3 ~ 7 days; fiber optic cable and equipment 7 ~ 15 days | Payment Terms: Western union,T/T,PayPal | 
| Sunwise Optical Communication Equipment Co.,Ltd [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Mray | Certification: CE, FCC, RoHs, ISO9001 | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 1 piece | 
| Delivery Time: 1~2 days for samples | Payment Terms: T/T, Western Union, L/C | 
| Shenzhen Miray Communication Technology Co., Ltd. [China] | |
| Active Member | |
| Brand Name: Mray | Certification: CE, FCC, RoHs, ISO9001 | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 1 piece | 
| Delivery Time: 1~2 days for samples | Payment Terms: T/T, Western Union, L/C | 
| Shenzhen Miray Communication Technology Co., Ltd. [China] | |
| Verified Supplier | |
| Brand Name: GEZHI or OEM | Certification: CE/FCC/RoHS/TUV/UL | 
| Model Number: 40GB-SR4-QSFP | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1~3working days after payment | Payment Terms: T/T, Paypal,Western Union | 
| Gezhi Photonics Co.,Ltd [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: GEZHI or OEM | Certification: CE RoHS FCC | 
| Model Number: 40GBASE QSFP+ SR4 | Minimum Order Quantity: 1pc | 
| Delivery Time: 2-7 work days | Payment Terms: T/T, Western Union | 
| Gezhi Photonics (Shenzhen) Technology Co., Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: YXFiber | Certification: CE RoHS FCC ISO9001 | 
| Model Number: YXF-QP-S31L-03D | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1~3working days after payment | Payment Terms: T/T, L/C, Western Union | 
| Wuhan Yongxinfeng Science & Technology Co., Ltd. [Hubei,China] | |
| Active Member | |
| Brand Name: YXFiber | Certification: CE RoHS FCC ISO9001 | 
| Model Number: YXF-QP-S31L-03D | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1~3working days after payment | Payment Terms: T/T, L/C, Western Union | 
| Wuhan Yongxinfeng Science & Technology Co., Ltd. [Hubei,China] | |
| Verified Supplier | |
| Brand Name: YXFiber | Certification: CE RoHS FCC ISO9001 | 
| Model Number: YXF-QP-S31L-03D | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1~3working days after payment | Payment Terms: T/T, L/C, Western Union | 
| Wuhan Yongxinfeng Science & Technology Co., Ltd. [Hubei,China] | |
| Active Member | |
| Brand Name: YXFiber | Certification: CE RoHS FCC ISO9001 | 
| Model Number: YXF-QP-S31L-03D | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1~3working days after payment | Payment Terms: T/T, L/C, Western Union | 
| Wuhan Yongxinfeng Science & Technology Co., Ltd. [Hubei,China] | |
| Verified Supplier | |
| Brand Name: OLKOPTO | Certification: CE, RoHS, FCC, FDA, UL, EMC, ISO9001 | 
| Model Number: OLSQ314XL-CD02 | Minimum Order Quantity: 1 pc | 
| Delivery Time: 3-6 working days | Payment Terms: T/T | 
| Shenzhen Olinkcom Technology Co.,Ltd [China] | |
| Verified Supplier | |
| Brand Name: GEZHI or OEM | Certification: CE/FCC/RoHS/TUV/UL | 
| Model Number: GP-QSFP-40GE-1SR | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1~3working days after payment | Payment Terms: T/T, Paypal,Western Union | 
| Gezhi Photonics Co.,Ltd [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: UTOPTEK | Certification: CE FCC RoHs | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 1piece | 
| Delivery Time: 1-2days | Payment Terms: T/T, Western Union,Paypal, Alipay,Wechat etc. | 
| Shenzhen UTOP Technology Co., Ltd. [Guangdong,China] | |
| Site Member | |
| Brand Name: Compatible module | Certification: CE | 
| Model Number: QSFP+40G-eSM4 | Minimum Order Quantity: 1 PC | 
| Delivery Time: 1-2 days | Payment Terms: T/T, Western Union,Paypal | 
| LonRise Equipment Co. Ltd. [Shanghai,China] | |
| Verified Supplier | |
| Brand Name: Hilink | Certification: CE Rohs | 
| Model Number: 40G QSFP SR4 | Minimum Order Quantity: 1 pieces | 
| Delivery Time: 5-8 working day | Payment Terms: T/T, Western Union,Alipay, Paypal/Wechat/Trade Assurance | 
| Shenzhen HiLink Technology Co.,Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Mray | Certification: CE, FCC, RoHs, ISO9001 | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 1 piece | 
| Delivery Time: 1~2 days for samples | Payment Terms: T/T, Western Union, L/C | 
| Shenzhen Miray Communication Technology Co., Ltd. [China] | |
| Active Member | |
| Brand Name: Mray | Certification: CE, FCC, RoHs, ISO9001 | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 1 piece | 
| Delivery Time: 1~2 days for samples | Payment Terms: T/T, Western Union, L/C | 
| Shenzhen Miray Communication Technology Co., Ltd. [China] | |
| Verified Supplier | |
| Brand Name: AscentOptics/Neuter, OEM | Certification: CE/FCC/RoHS/TUV/UL | 
| Model Number: 40G-QSFP-SR4-A | Minimum Order Quantity: 1PCS | 
| Delivery Time: Within 1-3 working days after PO confirmed | Payment Terms: T/T, Western Union, L/C | 
| Ascent Optics Co.,Ltd. [Guangdong,China] | |
| Verified Supplier | |